How do I know if someone I've reported has been dealt with?


Chess.com doesn't provide that info.
However, if you look at the monthly reports, you can see the hundreds of thousands of mute actions taken every month. They are the result of player reports.

I met aguy spamming he-- (WWII german leaders name) in the chat and when i looked up his acc he had n-zy symbol as his profil pic and i reported him. I want to see if he has been punished.

I met aguy spamming he-- (WWII german leaders name) in the chat and when i looked up his acc he had n-zy symbol as his profil pic and i reported him. I want to see if he has been punished.
Well all you have to do is look up his profile.