Question

How to store data using min firebase using firebaseauth unique id?

Answer 1

value seems to be a push ID, which is not a valid Firebase Authentication UID. So from that I get a feeling your users don't sign in. And while you can definitely come up with a system where push IDs identify users, those IDs don't carry over to Firebase Authentication or to Firebase Database security rules. To be honest: it would be quite insecure if they would carry over.

HOPE HELPS ✌️✌️

Answer 2

Retrieve ID tokens on clients. When a user or device successfully signs in, Firebase creates a corresponding ID token that uniquely identifies them and grants them access to several resources, such as Firebase Realtime Database and Cloud Storage.