Salutations wandawuri,
Thank you for taking the time to visit the Apple Support Communities! It seems you have a concern with Screen Time activity. We will be honored to assist you! We see that you have viewed the self-help resource “Use Screen Time on your iPhone, iPad, or iPod touch”. “If you turned on Share Across Devices, you can view overall usage across devices that are signed in with your Apple ID and password.” More than likely this is why you are seeing the screen time for Google Drive. You can always set limits and “ manage Screen Time settings” for certain apps.
This information is available in the self-help resource that you were viewing prior to posting in the Apple Support Communities.
View your Screen Time summary on iPhone
For more visualization, please view this video:
How to start using Screen Time for iPhone, iPad, and iPod touch — Apple Support
Have a wonderful day!