Congrats! You're a couple of minutes away from launching your app on the largest app store by revenue
First login to AppStore connect and click "My Apps", after clicking my apps, you should see your app, simply select your app.

2. Scroll down and select a build. Select the most recent version (if you have multiple builds).

3. Make sure the content in the general section on the sidebar is complete and accurate.

4. Click submit for review
