Was that a joke? ("What?" "He said you were hard of hearing!" "What?" "You're HARD OF HEARING!" "...What?")
If so, then it was funny. If not, then you seem to not get how this works. How to make the mod work, in order.
Step 1: Buy the STEAM version of the game. You know, for PC? Mods won't really work on consoles. You bought a console, you should know this by now that customization is a PC thing.
Step 2: Download the mod.
Step 3: Extract it to the root of the game directory (steam\Steamapps\common\Saints Row the Third\)
Step 4: Play.