My bullet rating is about 1000-1100 here and it is only about 700-800 on chess.com. Is it normal? And which is more close to FIDE?

P. S. I know that it is incorrect to compare different ratings but still.

chess.com is more close to fide, both are usually above fide (and also don't reflect the same skills unless you play 90|30 or other standard classical time controls exclusively), and this exact disparity is typical, yes.

11

See lichess.org/page/rating-systems.

3

FIDE doesn't have bullet ratings.

1

chessgoals.com/rating-comparison

Chess.com rating is quite lower than Lichess roughly 400 is the difference.

11

www.chessratingcomparison.com/ should also help you answer this qusetion.