EditCount was retired on UCP. You can check your Contributions page with setting the namespace to Main, and the amount of entries to whatever helps you count. Then you can manually update your profile page once upon a time.
Far as I know, there's no magic word that can accomplish that. But I mean, your edit count already shows up on your masthead, so why would you want to put it on your profile page as well? Wouldn't that be a bit redundant?