I have a 1993 jeep cherokee I can't get the radio and the heater to work does any one know were there fuse box is located or if that is even the problem?

Under hood fuse boxes are normally located close to the battery. However, you want to test both under hood and under dash fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-3.html#post252145