To upload an app to the Google Play Store, you will need to create a Google Developer account and pay a one-time registration fee of $25. Once you have created a developer account, you can follow these steps to upload your app:

1. Go to the Google Play Console.
2. Click on “All applications” and then click on “Create application”.
3. Enter a name for your app and select the appropriate language and category.
4. Click on “Create” and then click on “Upload app bundle or APK”.
5. Select the app bundle or APK file that you want to upload and then click on “Upload”.
6. Once your app has been uploaded, you will need to provide additional information, such as the app description, screenshots, and privacy policy.
7. Once you have provided all of the required information, you can submit your app for review.

The Google Play team will review your app within 7 business days. If your app is approved, it will be published on the Google Play Store. If your app is not approved, you will receive an email explaining why and what you need to do to fix the problems.