Good luck in your project 💖
And if you need any help, feel free to ask 😊
Did you create your Firebase database and used the info and wrote it in your gdevelop project (Firebase config section) ?
Please make sure you followed the step-by-step video and applied all the steps with the correct naming.
+ Make sure to read the comment in: the Project → Main menu scene → events → (Show leaderboard names and scores from Firebase) group event.