Why is my iCloud inactive
How do I activate iCloud mail account?
iPad Air, iPadOS 14
Question marked as
Did you set up iCloud account in iPad Set up iCloud on your iPhone, iPad, or iPod touch - Apple Support
Set up iCloud Mail on your devices - Apple Support
If iCloud Mail isn't working - Apple Support
Is your Apple ID account disabled If your Apple ID is locked or disabled - Apple Support
You have to follow the article Add an email account to your iPhone, iPad, or iPod touch - Apple Support