If you're building with Flutter, this is a command that will save you a lot of time when releasing a new update.
You need to generate an API key for the App Store.
It builds the iOS release and pushes it to the App Store, then it builds the Android version and opens the folder so you can drag and drop it to Google Play.
It saved me a lot of time
flutter build ipa && xcrun altool --upload-app --type ios -f build/ios/ipa/*.ipa --apiKey your key --apiIssuer issuer id && flutter build appbundle --release && open build/app/outputs/bundle/release