I wanted to connect google sheets with n8n but when I wanted to copy the url, there’s no column for it. Please help 
You just need to click the sign in with google version, the url to copy got removed for cloud, idk about self host.
You don’t need to paste a Webhook URL in for Google Sheets, n8n handles this all through a connected Google account using Google’s OAuth. All you need to do is sign into your associated Google account and you should be all set.