i tried to burn a copy of unreal tournament but says the game is not available to copy, wth can i do???

Use CloneCD… But first do some basic ‘research’ like is your burner supported, what protection does your disc have, what settings do you need to use, etc.

To scan your disc use a copy-protection scanner like ClonyXL.
To see if your burner supports CloneCD (or if CloneCD supports your burner ;)) see the CloneCD website.