Issue
I uploaded an Android app with Play App Signing and am now trying to get it's SHA-1 and SHA-256 fingerprints.
Google's documentation state that you can find the fingerprints in the Google Play Console on the Release > Setup > App Integrity page, but as far as I can tell, this page does not exist.
Solution
Manually
Open the Google Play Console then select the app you want and then you can find the Play App Signing page under Release > Setup > App Integrity.
Below is a screenshot:
Automatically
You can navigate directly to the Play App Signing page using the below Google Play Console Keymanagement Url:
https://play.google.com/console/developers/app/keymanagement
It will prompt you to select the app first you are interested to and then it will redirect you to the Play App Signing page for the selected app.
Answered By - MariosP