What rating would we need to start getting respect from other members?
What rating do we need to stop getting laughed at and frowned upon for being bad at chess?
I know everyone has their own answer and they may differ from others, but whats a respectable rating
About 200 points higher than the person questioning your ability xD
More seriously though, the thing about chess rating is how much it takes to learn and improve and especially at the higher levels just how DIFFICULT it is to gain even a little more rating. Improving 200 rating points isn't too troublesome for most going from 800 to 1000, but the same interval of 200 points might take a 2000 2-3 years to reach 2200 rating. Obviously everyone improves (or not) at their own pace, but the problem is that that because their is such a knowledge gap sometimes, many players improve and then realize just how much they weren't even considering in the past! They see all the new things they've learned and now there are other things they have yet to imagine.
Think of it like this, imagine you walk into a dark room and all you have is a small source of light with you (candle, flashlight, lamp, whatever your imagination creates). See how little light you have, but also how it is better than nothing? Look around at the small portion of the room you've illuminated. Now take a few steps deeper into the room, see a little bit more? Now what if your source of light doubles in brightness? Look at how much more you can see?...But what if the room is actually the size of a large warehouse? There is still much in the dark you aren't even aware exists or even considers. Now a GM is able to flip on the light-switch and turn on all of the overhead lights and brighten up the entire warehouse at once. Look at how much they see compared to everyone else. The might not see everything, but it is way more than the rest.
That is kind of like how chess rating is. The more chess knowledge, understanding and ability you acquire (rating), then the more light you have access to. The higher rated players literally "see" more than you do, but only because their light is a little brighter or a little bigger (higher chess rating), but even they are ignorant to the "shadows" they also can't see. When they reach those new shadows on the horizon, then they will be in awe at the new things they see and didn't know about, but also ignorant to that just ahead.
So what rating will players gain chess "respect?" Sadly, never. 1200s are disrespected by 1400s who are disrespected by 1600s and so on and even someone as high as an IM might be looked down upon by a GM...a GM looked down upon by a "super-GM" and even a super-GM to the World Champion...ironically even the World Champion may feel others have higher ability in certain aspects of the game, so rating is a case of the grass is always greener on the other side of the fence, or back to the light analogy, someone else always seems to have more light than you do.
I don't think all of this "disrespect" is as cynical as players bullying others, but probably in part just because the person reaching their new rating heights recognizing all that they previously didn't know and now know, but will soon later (if improving) then realize all just ahead that they weren't even considering.
As you gain rating, more and more people will respect your rating/ability, but there will always be someone higher in some way or another. Perhaps the lowest ratings get the most disrespect and the higher one goes the less disrespect by rating there is, but I don't know if this ever goes away entirely.
Probably by 1500-1600 level I'd say most probably recognize you are serious about your chess (this rating is better than about 90-95% of all chess.com players according to stats global percentile), but in all honestly even this rating is just beginning to really grasp "positional concepts" in chess such as weak squares, outposts and being able to exploit these in games and able to convert this into a win with decent frequency. 1800+ rating is more experienced in these positional elements, but even here it is lesser than the positional nuances a 2000+ players "stacks" onto this.
I guess all of this just goes to show that other people perceptions and opinions don't really matter as much as how YOU view your own rating and how satisfied you are with your current rating/ability and where you are at with your chess journey now 
What rating would we need to start getting respect from other members?
What rating do we need to stop getting laughed at and frowned upon for being bad at chess?
I know everyone has their own answer and they may differ from others, but whats a respectable rating