Visit your profile by tapping the single-person icon at the bottom of your game >> tap the Profile tab.
Once in the Profile tab >> tap the gear icon located at the upper right of your profile.

To resend your email verification:
Tap on Email >> EDIT.

CHANGE EMAIL: You’ll be able to change the email address that is linked to your account.
RESEND: An email will be sent to your email account. You will need to open the email to validate your account.