Overview
The Google account menu can be accessed once Site Kit is set up from the dashboard by clicking on your profile photo or initial in the top right of the Site Kit dashboard.

Manage sites
The Manage Sites item will take you to the Site Kit service where you can see and manage all sites you have granted Site Kit permission to use Google APIs with your Google account.
Remove access for sites you no longer use or trust. You can manage your site permissions at any time.
Disconnect
Selecting Disconnect will remove your user’s access to all services. After disconnecting, you may sign in again any time.