Icloud email on Kindle Fire

You need to enable 2 Factor Authentication on your Apple ID and create an app specific password to use. If your account won’t allow 2 Factor Authentication, try 2 step verification.

Apple ID -Two-factor authentication

Two Factor Authentification availability

Apple ID - Using app-specific passwords

Apple ID - Two Step Verification App Specific Passwords

Apple ID - Two Step Verifications FAQ

sherlockgirl wrote:

How do I set up my icloud email account icloud.com on a Kindle Fire 7 tablet

Perhaps: iCloud email set up Kindle Fire may be helpful.