u/Altruistic-Stick4015

I heard (as a shift supervisor) that i mightve accepted a fake 100, i know this is a big deal but would i get fired for this? I have a write up already because of attendance a year back. I did check the bills i remember and i thought it was all good but i dont remember this one tbh

So this is a new debt due to a car accident and my card is a credit one card and has about a 29% APR and was wondering if i make 150 dollar payments each month would i be safe from any trouble or too bad of interest? Sorry im not the most educated on debt