I have heard that if you draw or win against this monttthhs bots then you get free nitro but discord says that you can get a chess.com membership if you have nitro is that true
Yes
https://www.chess.com/news/view/discord-bots
But if you already have Chess.com premium you won't be able to use the free offer from Discord as it's only available to basic members.
I have heard that if you draw or win against this monttthhs bots then you get free nitro but discord says that you can get a chess.com membership if you have nitro is that true