Reversed polarity

Hey guys i have a 2013 Prius c which I bought from a auction to rebuild. The 12v battery was dead when I got it so I took it out and got it charged up when replacing the battery, I accidentally hooked up the wrong terminals and as doing that it caused a spark and the horn went off I immediately took the wires off and flipped the battery. I went to go start it the dash light up and gave me the message to check the hybrid system while giving the engine gas it would run but turn off after few seconds. I started checking the fuses and the 100a fuse is blown and so is the dome fuse and the abs fuse. Does anyone know how to replace the 100a fuse I can't seem to find how to get to the bottom wires to unbolt it and I hope that inverter is okay otherwise that's gonna be a expensive fix

 

All the service manual says is to take it to the closest dealership

 

Thanks bisco but i dont see anything on there for the 100a fuse and how to replace it