How do I add ads to AdMob

How do I add ads to AdMob

You should use a commercialized version of App Inventor like Thunkable. App Inventor 2 does not have that option. See https://community.appinventor.mit.edu/search?q=monetize

I recommend Kodular for that

Also creator.kodular.io is where you can create, like in ai2.appinventor.mit.edu

For now, as far as I know, you can't add ads from admob in appinventor but you can add ads from other ad companies alternative to admob like "start.io" in this link you can find an extension that allows you to add ads from "start.io".