There are a few different ways to install the Google Meet app:
Option 1: Go to meet.google.com in your web browser and click "Download the app."
Option 2: Download the app from the Google Play Store if you're using an Android device, or from the App Store if you're using an iOS device.
Option 3: Sign in to your Google account on a Chromebook and click the "Google Meet" app in the Chrome Web Store.
Once you've downloaded and opened the app, sign in with your Google account to start using Google Meet.