Scoresheet Question

I'm going to my first OTB tournament this weekend and was wondering how score sheets work? Do you have to bring your own? Do you need to write everything down twice to analyze your game later? Would really appreciate knowing what the protocol is. 

Make sure you know chess notation, as most OTB tournaments require you to write down all the notation of the game on a scoresheet, and often provide scoresheets for the players. However, if you have a scoresheet book or some kind of collection of scoresheets that you own, I would reccommend bringing that instead, as it is easier to keep all your games in one place to review later. 

@1

"how score sheets work?"
8.1.1 In the course of play each player is required to record his own moves and those of his opponent in the correct manner, move after move, as clearly and legibly as possible, in one of the following ways:
8.1.1.1 by writing in the algebraic notation (Appendix C), on the paper ‘scoresheet’prescribed for the competition
8.1.1.2 by entering moves on the FIDE certified ‘electronic scoresheet’ prescribed for the competition.
8.1.2 It is forbidden to record the moves in advance, unless the player is claiming a draw according to Article 9.2, or 9.3 or adjourning a game according to Guidelines I.1.1
8.1.3 A player may reply to his opponent’s move before recording it, if he so wishes. He must record his previous move before making another.
8.1.4  The scoresheet shall be used only for recording the moves, the times of the clocks, offers of a draw, matters relating to a claim and other relevant data.
8.1.5 Both players must record the offer of a draw on the scoresheet with a symbol (=).
8.1.6 If a player is unable to keep score, an assistant, who must be acceptable to the arbiter, may be provided by the player to record the moves. His clock shall be adjusted by the arbiter in an equitable way. This adjustment of the clock shall not apply to a player with a disability.
8.2 The scoresheet shall be visible to the arbiter throughout the game.
8.3 The scoresheets are the property of the organiser of the competition. An electronic scoresheet with an evident defect shall be replaced by the arbiter.
8.4 If a player has less than five minutes left on his clock at some stage in a period and does not have additional time of 30 seconds or more added with each move, then for the remainder of the period he is not obliged to meet the requirements of Article 8.1.1.
8.5.1 If neither player keeps score under Article 8.4, the arbiter or an assistant should try to be present and keep score. In this case, immediately after a flag has fallen the arbiter shall stop the chessclock. Then both players shall update their scoresheets, using the arbiter’s or the opponent’s scoresheet.
8.5.2 If only one player has not kept score under Article 8.4, he must, as soon as either flag has fallen, update his scoresheet completely before moving a piece on the chessboard. Provided it is that player’s move, he may use his opponent’s scoresheet, but must return it before making a move.
8.5.3 If no complete scoresheet is available, the players must reconstruct the game on a second chessboard under the control of the arbiter or an assistant. He shall first record the actual game position, clock times, whose clock was running and the number of moves made/completed, if this information is available, before reconstruction takes place.
8.6 If the scoresheets cannot be brought up to date showing that a player has overstepped the allotted time, the next move made shall be considered as the first of the following time period, unless there is evidence that more moves have been made or completed.
8.7 At the conclusion of the game both players shall indicate the result of the game by signing both scoresheets or approve the result on their electronic scoresheets. Even if incorrect, this result shall stand, unless the arbiter decides otherwise.
https://handbook.fide.com/chapter/E012018 

"Do you have to bring your own?"
++ No, it is provided by the organiser and stays property of the organiser.

 @2
"if you have a scoresheet book or some kind of collection of scoresheets that you own, I would reccommend bringing that instead"
++ No, that is not allowed as you could look at previous games
'11.3.1 During play the players are forbidden to use any notes, sources of information or advice, or analyse any game on another chessboard.'

If it's your first OTB game, they'll probably go easy on you.

I'd bring a spare pen with you just in case. They should have spare ones at the tournament, but you never know.

Write down once - I'd just snap a photo of the scorecard on your phone before handing it in, so you can analyse at home (maybe ask if that's OK before pulling your phone out but I don't see why not).

And good luck!

It depends on the type of event (FIDE, USCF, local club unrated event...and so on). 

It would be a good idea to learn how to write chess notation if you can. You will probably need to write down your moves on the scoresheet, but even if it is a casual event where you don't have to, it is still a good idea to write down the moves for future analysis and learning. 

For rated events (FIDE or USCF etc.), they will usually provide scoresheets for you. It might be possible to bring your own for certain events, but it is probably better to just use theirs and it is also one less thing for you to carry if you use one of their scoresheets.

As for writing it twice, it depends if your event requires you to turn in your scoresheet to the tournament director. If you don't need to, then you can just take the scoresheet home with you. For the larger events where a copy of the game should be left, then you might need to write down the game moves on a separate sheet. One of the benefits of using their scoresheets if that they usually (especially for bigger tournaments) have a yellow carbon copy page under the white top one. If your event has these kinds, then you write the moves on the white sheet and you can just turn in the yellow sheet to the tournament director's records and take your white sheet home for your own reference (the pressure of your pen/pencil [I use pen as it shows up better] will bleed the writing onto the yellow sheet below, so you only need to write it once to end up with a copy). 

They will probably provide extra pens, but it might be a good idea to bring one or two of your own. I bring my own to OTB events. I carry two pens with me just in case one runs out of ink or jams or whatever, then I have a second pen, so I don't have to get up and use some of my clock to find another pen. 

Best of luck with your OTB chess though The scoresheet thing isn't too bad. It is probably more important to take in the "experience" and try to enjoy your first event. Everyone is nervous their first several chess events, but it gets more comfortable to play in over time

     Most events provide scoresheets. Usually these are two-part scoresheets that make a carbonless copy of what you write on the top sheet--then you tear off the top sheet and keep the yellow copy.

Except you keep the yellow copy? My club events don't care and usually I keep the white one and they keep the yellow one xD I guess it depends more on the person running the tournament and what they prefer (or don't care) xD

8.1.1 In the course of play each player is required to record his own moves and those of his opponent in the correct manner, move after move, as clearly and legibly as possible