Create a Firebase project

1 Go to the Firebase Console: https://console.firebase.google.com

2 Click on "Add project."

3 Enter a name for your project and click on "Continue."

4 Enable or disable Google Analytics based on your preference and click on "Continue."

5 Select or create a Google Analytics account and click on "Create project."

6 Wait for the project to be created, then click on "Continue."

Connect With Project

1 In the Firebase Console, click on the "Android" or "iOS" icon, depending on the platform you want to connect.

2 Enter your app's package name (Android) or bundle ID (iOS). You can find this information in your AndroidManifest.xml file (Android) or Info.plist file (iOS).

3 Enter an app nickname and click on "Register app."

4 Download the google-services.json (Android) or GoogleService-Info.plist (iOS) file and add it to your Flutter project. Place it in the android/app folder (Android) or the Runner folder (iOS) in your project directory.

5 Click on "Next."