How do I link Unity to Firebase?

Go to Database section . Tap Cloud Firebase (marked 1 in picture) and select Realtime Database . Marked 2 is the URL .

Registering your iOS or Android app

You can find your Realtime Database URL in the Realtime Database section of the Firebase console . Depending on the location of the database, the database URL will be in one of the following forms: https:// DATABASE_NAME . firebaseio.com (for databases in us-central1 )