Step 4. Configure your Build & Distribute
Now your repository is linked, and all the existing development branches are listed. Select the one you want to build and select “Configure Build”.
Make sure to check the toggle for “Sign builds” and either check the box if your gradle settings handle signing or upload your keystore to sign the build to be used for distribution later.
Toggle “Distribute builds”, which will automatically send a download link to you via email once the build is complete. Finally, press “Save & Build” to kick things off.