Uploading ZIP File to Unity Store?

I’m about to put my music pack on the Unity Store through the “Package Upload” while in Unity. I was wondering since the music pack is quite large, should I compress it into a ZIP file and then upload it, or just upload the whole file?

Help is appreciated!

Nope. You need to organize them in unity folders as you would use them in the editor. So your buyers will be able to do the same.
And then when you make your publishable package you will choose these folders. Then you will upload this package what the asset store application made (AFAIK it’s a zip file with the extension of .unitypackage).