This Mac can’t connect to iCloud because of a problem with “email typed here”.
[Edited by Moderator]
iMac 24″, macOS 15.6
Question marked as
Presumably you clicked the blue button and didn't get anywhere.
If you are using a VPN, non-Apple "firewalls" or "security" products or anything else that could possibly interfere with the end-to-end encrypted communications between that Mac and Apple's servers, don't.
Otherwise read If you can't connect or sign in to iCloud - Apple Support, or contact Apple Support, here: Official Apple Support.