So, I recently got the MC mod and I tried to use the skill cheat, which is basically by going into the advanced menu, but only 3 options appear: Edit in CAS, Force kill, reset sim. That's it. There's no skill level. Is this a glitch or am I just doing this wrong?

Do you just have the MC Base-mod installed? You need the "Cheats" module as well to access the cheat interactions.

Do you mean testingcheatsenabled or something? I've had this mod before and never had a "cheats" module.

Several of the mods here have optional add on components, also referred to as add-on modules. MasterController has four of them, one of them is called MasterController Cheats (the others are Integration, Progression, and Expanded Tattoo). MC Cheats is the one that is required alongside of the base mod for the Skill Level command to show up under Sim > Advanced.
<a href="http://nraas.wikispaces.com/MasterContr ... troller</a>

Here is the full Interactions page for MasterController. You can see which module (if any) is required for each command as it is noted where relevant.
<a href="http://nraas.wikispaces.com/MasterContr ... actions</a>

Okay, thanks