We need to push our local repo to github and then connect it to vercel. Than we have our app published on vercel. If the name you have set for your repo is my-google-app, then you will find your app on internet with that url (if you don't change it manually on vercel):

After the first publication on vercel, we have to verify our ownership of the domain. This is requried if we want google know about our website. It maybe not requried to publish the app (I'm not shoure yet). Then we also want to use Vercel Analytics for checking visitors.