How do I Convert already exported aab to desktop?

Dear all I have a game that I re-skinned and uploaded to play store but I lost the source folder

So, I only have the hosted aab file hosted on Google play store, how to get the file back and export it for Windows desktop ?

play.google.com/store/apps/details

Regards

You cannot get the source code out from an abb or apk, if that’s your question.

Thanks for your help