Scotty is it worth repairing my 2000 Ford Explorer head gasket it also has the exhaust leaks with cylinder 1,3,6 misfires and the vacuum leaks as well as a p0442 code which is nit the gas cap so what do you think

18 years old, I'd pass myself, it probably needs a lot more than just a head gasket. If you like the truck, look for a good used engine