Converting iso to usb using horizon

need help converting my iso game to what ever format to load
on horizon to put on to usb for my xbox 360 can anyone help me

The only format that would be supported is Game On Demand(GOD) and you would need a modified Xbox to run it. If you do then just use ISO2GOD. If you don’t then there is no reason to waste your time.

Only GOD Files? And what is with .LIVE Files? How to convert ISO to LIVE?

You cannot convert ISO to Live files. Live files are files distributed and signed by microsoft for use on the xbox live platform.