My horn on my 98 ford escort zx2 just clcks,why wont it work

You hear the horn relay clicking. that's a good sign! means your horn circuit is good. now find the horn (often there are two close together) at the front of car (may have to search a little-could be anywhere at front of car). Find the horn and see if the two wire connector is connected. Try unconnecting it and reconnecting-might have lost contact. If still no go, check if power is at horn on hot wire, while someone holds horn on in car. If you do have power at the horn, try replacing horn. Only one or two bolts are used to mount it. If it's only a single wire, then it's case grounded. that wire is your hot wire.