Unable to login to FaceTime and iMessages on MacBook Air -Catalina updated

I am unable to login to my FaceTime and Imessages on MacBook,

for FaceTime the error says: the account has no reachable address log into appleid.apple.com to add one. though its there in Apple ID.

for iMessages the error says: Couldn't sign in to iMessages, An error occurred during activation. Try again.

I tried checking it out through the web, applied those solutions but it didn't work for me.

Can you please share the solution for this problem.

Thanks