It’s like this; if you don’t know how to check the fuses, you may be better off bringing it to a shop and asking if they can do it. It will take about five minutes. Nobody said anything about a relay. Your AC can’t be saved without $1,700 worth of work. There is no easy repair.
If I had known your qualifications… One guy said that he wasn’t mechanically inclined, so I gave him advice that was too simple. He went to a parts place, borrowed a code reader and changed his powertrain control module. Problem solved.
You’re on the spot, you’re the man. Accept the position and find the fuse box, even if it means actually looking for it or doing some research at a library or asking a parts guy to show you where it is.