I have exported an Android App Bundle file to upload at Play store with NDK downloaded from Unity desired location because Android Studio NDK file is not compatible with Uni
For future reference:
It's an issue with google play and x86 build that do not offers a 64bit counterpart code. Disabling x86 build fix this issue.
Reference: https://forum.unity.com/threads/successful-unity-aab-build-not-compliant-with-the-google-play-64-bit-requirement.729035/
The problem started on 08/20/2019.