Most Google apps have a single button in controls toclear your data or cache.
However, Play Services deals with data from many apps.
Go to prefs > Apps > Google Play Services.
Typically, you’d find a button here marked “Clear data.”
For Play Services, though, you’ll see a button that says “Manage Space.”
The menu you see will have options to manage or clear a variety of data.
There are also buttons to clear data from apps using Drive storage, or other Play Services.