Im very new in shopify app development, i think that having a dashboard for myself for manage data or info of the app (who downloaded or Nº of downloads) but i dont know how to put it in my shopify app.
Any data displayed in the dashboard should be available and exposed in the Shopify APIs. If that's the case, then it's just a matter of creating a web app that pulls that data from the API and displays it in the dashboard.