Points

What points are you asking about? Tactics? Game ratings?

live blitz points. I have 635 points now

oh just create a new account and win one game and you get around 230+

Ratings when you first start are very volatile and will go up and down a lot. As you play more games it becomes more stable.  The system also take into account how recent the games are so if you take a long break the RD value will be higher and you will get bigger swings.

https://support.chess.com/customer/en/portal/articles/1444777-how-do-ratings-work-

Those are ratings, not points. There is something else called points on Chess.com based on how actively a player participates in discussions, and the points have nothing to do with ratings.

The first few games your rating change can be very high, of the order of maybe up to 200 points. As more games are played, the rating fluctuations will decrease to +8/-8 for players of similar rating since your playing strength is defined more accurately with more games played.

If for example you have played 2 games only, with one win and one loss, and your rating after the second game is 1000, it will be hard to say with 100% confidence, without looking at the games, that you have played very terribly in the game that you lost, since you may have just hung a queen to a pawn by a mouse-slip accident in a position which you would have otherwise dominated your opponent, or you may have lost on time while you are holding 5 queens and a king versus your opponent's two pawns and one king. In contrast, if you have played 2000 games, with 1000 wins and 1000 losses, and your rating after the 2000th game is 1000, chances are, it is highly likely that you are playing at the 1000 level. You would not be mouse-slipping or running out of time in all 1000 games right? Of course, it would be logical to reduce the rating gains and losses to a small number after that, or else, you will suddenly become a 1300 player out of nowhere for winning the 2001st game.