How can I use my icloud email address to the android phone?

To add iCloud to the Android mail app, you need to turn on two-factor authentication for your Apple ID if it is not already on and then use an app-specific password rather than your normal Apple ID password. See the following:

Mail server settings for iCloud email clients - Apple Support

and

Two-factor authentication for Apple ID - Apple Support

and

Using app-specific passwords - Apple Support

Also see: https://www.androidcentral.com/how-set-your-icloud-email-account-android