Each .wsappbak file ranges from depending on the app (games like Minecraft can be several GB). It is not uncommon to find 10–30 GB of orphaned backup files after two years of feature updates.
It sounds like you are dealing with a messy situation involving a wsappbak file (a WhatsApp backup file) and you need to know how to make it work, or perhaps you are explaining a complex backstory about why you need it. wsappbak work
: WSAppBak leverages the official Microsoft utility MakeAppx.exe (part of the Windows SDK) to bundle the app's files back into a single .appx or .appxbundle file. wsappbak work
: Repackaging apps allows for minor modifications to the AppxManifest.xml before re-installation. Important Safety & Security Note wsappbak work