Deploying your Capacitor Android App to the Google Play Store
Because Capacitor apps are normal native apps at the end of the day, the way they are deployed to the Google Play Store is just like any other native Android app.
To start, consult the official Google documentation on the launch checklist to get your app ready for submission. See here for details on generating splash screens and icons for your app.
For a guide with some Capacitor-specific considerations, see Josh Morony's wonderful guide on the topic.