I want to know how we can put review or rate google play store (not their apps)
- From Play Store support
When you can write a review
You can only review apps you’ve downloaded.
- Since you didn't download Google Play, you can't review it. Instead, from the Play Store → Help & Feedback → Send feedback at bottom (via mail) is an option.
Edit: Just found this, it is a better option. Raise it in the Google Play help community