How to play a classical game ?
Currently, Chess.com does not have its own Classical rating category. Looking briefly at your play history, you have been playing 30 minute games already (which would probably be classified as Classical elsewhere). Everything above 10 minutes is put into the "Rapid" category in Chess.com.
I do hope that Chess.com implements a separate Classical rating for 30 minute or longer games.
Buttered Cat Loaf has entered the chat room
Salute him or thou shall perish
But in the Chess.com Rankings every player has three scores. One for CLASSICAL the second for RAPID and the third for BILTZ.
How to play CLASSICAL ?
As far as I know the Rankings if you know all of them they are "Daily" (What you might refer by "Classical" and has a maximum of a month per move) "Rapid" (10"+) "Blitz" (10"-) "Bullet" (2"-) and "Hyper-Bullet" (30s - or 1s with delay)
But in the Chess.com Rankings every player has three scores. One for CLASSICAL the second for RAPID and the third for BILTZ.
How to play CLASSICAL ?
The Classical rating on the ranking page are official over-the-board FIDE ratings. To get a FIDE rating for Classical, you must play over-the-board. I recommend reaching out to any local chess clubs in your area if you are interested in playing official over-the-board chess.
How to play a classical game ?