First of all we always warn that before changing the operating system of your Mac be clear that all third-party applications or even the Mac App Store that you use for your daily work work perfectly in the new version. This can be done in a simple way by sending an email to the developer himself, looking at forums or on social networks.
Having said that, we have to clarify that what happens with the XML files in the iTunes library will have a solution soon and hopefully Apple is already working on it. That said, it must be clarified that it is because of the deletion of this file in iTunes from macOS Catalina that those who work playing music with their Mac should stick to macOS Mojave (or earlier) for now.
Giving the app permission to access the iTunes database is over and this can be a problem for those who need to have a list of songs arranged in the iTunes library. So the answer in this regard is clear, If you use the MacBook to put music and your work depends on it, do not update. In my case I already have everything updated and I have no problems due to this restriction when sharing this XML file from my iTunes library.
It appears that the Music for Mac app has a different file format than this and in the developer beta versions there was an option through the iTunes APIs to access these lists. Now this file is no longer available in the official version and therefore if your job is to put music it is recommended that you stay out of the new version of macOS Catalina until the problem is solved with a new version of iTunes as well they comment on AppleInsider.
Did you run into the problem?