I've been searching for a while, even tried doing it myself,but it appears I can't seem to find any tutorials with it. I'm not the best with mac so any help would be appreciated.
Thank you!
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I got it.

I'll share with others because some other people may have this issue, too.

Step one: Download the mod

Step two: Look at it in Chrome / Internet Explorer / Safari / Firefox downloads

Step three: Click "Show in Finder". Don't do anything after that for now.

YOU ARE DONE WITH THE MOD / SCRIPT FOR NOW

Step four: Open Toribash game

Step five: On your taskbar, right click Toribash

Step six: Select "Show", then "Reveal in Finder".

Step seven: Scroll up (in the finder) until you find Scripts or Mods, depending on what you are downloading.

Step eight: Drag the mod or script to its designated folder

Step nine: Restart Toribash

You're done!