So I recently tried to update a game I made and this message came up. I recently updated to Unity 2019.2.0f1 and am still kinda new at this. I read through the support pages on the Android support site and it said I would need to analyze my APK file through Android Studio. Is this the only way around it or is there a Unity specific and/or built in way that makes sure this and any other future builds are compliant? I see they changed the stores requirements at the beginning of the month (August 2019).

You can do it all through Unity. No need to use Android Studio. Follow the steps outlined by Unity in this Blog Post: https://blogs.unity3d.com/2019/03/05/android-support-update-64-bit-and-app-bundles-backported-to-2017-4-lts/

The key things you need to do under Player Settings:

  1. Change the scripting backend from Mono to IL2CPP

  2. Make sure to check ARM64 as a target architecture