by Before submitting your Android app to Google Play, make sure you’ve tested your app on a real device.
To submit for Android, you will need a Google Play developer account.
If you have not generated a release key and downloaded the signed .apk from PhoneGap Build, follow the steps in the previous lesson on Android Release Key Signing.
Submitting your app is then just a matter of filling out your app store profile and uploading your signed .apk file.
Please read the documentation here Google Play app submission