Games against the computer bots don't have a timer (Play>Computer). All the rated games do, but you can play Chess.com's version of correspondence chess (Play>Daily) and take days to make a move (as well as use books and databases for opening help). Let me see if I can find an article that might help...
https://support.chess.com/article/330-why-are-there-different-ratings-in-live-chess
Hello everyone! I joined this website yesterday but I only know how to play chess in real life. Also, can someone help me and show me how to play chess without the timer? Thank you!