This is a demonstration of some features provided by the Firebase Plugins for Construct 3. Get the Plugins:
I mean, when I get the score in the game, it will save automatic, so you can not cheat with score.
Is that possible with Firebase PlugIn Basic
I couldn't understand what you mean by "automatic".
Btw, read this to know what you need to do to secure your project: constructfirebase.com/docs/guide-basic/secure-your-firebase-project