How to transfer my account to another email adress

Hi,
i need to transfer my account to another gmail adress how can i do ?

You can't.

Unless you have a special case that requires the change... like your email address was abducted by aliens.
If that or something similar has indeed happened to your email address then you can contact Support in-game via Help & Support -> Contact Us/New conversation button in the top right.
They might or might not do something for you.