Block them.
https://support.chess.com/article/628-how-can-i-block-another-user
....if any get ridiculous you should right then contact a mod, Martin is one of them and I'll post another and you tell them exactly what the id_ot posted to you. (I did that to that word so the bots here didn't warn or mute me for typing it)
I keep getting message from weird guys asking for date. How I keep them from sending message to me
Use this pic for your avatar:

I keep getting message from weird guys asking for date. How I keep them from sending message to me
Seems many here want to date an actress
https://m.imdb.com/name/nm2136735/
No idea why.
Perhaps pick a less popular profile.
You could also change your privacy settings
https://www.chess.com/settings/privacy
Use this pic for your avatar:
What a beautiful man or thing or whatever that is ...
What about this one?
Oooh, How do I reach that chick?
If you need help, please contact our Help and Support team.
I keep getting message from weird guys asking for date. How I keep them from sending message to me