To set up a Google Play/Apple App developer account & publish the apps, you just need to follow the steps mentioned in the following blog:

For Google Play Store:

https://www.knowband.com/blog/mobile-app/how-to-publish-your-android-app-on-google-play-store/

For Apple app store:

https://www.knowband.com/blog/mobile-app/how-to-publish-your-ios-app-on-the-apple-app-store/

For more detailed info, drop your message at support@knowband.com. Our pro-active support team will assist you with everything.