Using an android how can I check my iCloud email?
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