How to get out of limp mode, after battery was connected incorrectly?

So, someone tried to put a new battery in my car, but they hooked it up backwards. meaning they hooked positive to negative and negative to positive and then said okay turn it over so when I started my car of course nothing happened, but when we put the other battery back in my car wouldn't start. so, looking at it the next day I realized basically every single fuse had been blown. so, we replaced what fuses we could to get it driving again but ever since then it's been in limp mode.