How do I upload my music to iTunes.

See iTunes for Windows: Import music and video already on your computer.

See also Get help with iCloud Music Library - Apple Support.

Or explain your issue in a little more detail.

tt2

Immortal,

Are you by any chance talking about selling your original music in the iTunes Store?

If that is what you mean see this:

http://www.apple.com/itunes/working-itunes/sell-content/music-faq.html