How can you get Goku ssj5 in budokai af

My guess is that Budokai AF is a modded game, probably of Budokai 3. In that case, it'd be impossible for me to tell you how to unlock Goku SSJ5. I haven't tried this before, but try using memory data from B3 in that modded game. If you have all characters and Transformations, it'd be easier than to look for equivalents.