Since your compressor is running we know you have voltage.
Either your fan motor has gone out, or the thermal overload has opened the circuit.
If the overload is open, you either have a mechanical problem within the motor or your capacitor need to be replaced.
The cheapest scenario is if your capacitor is out.
Here is a picture of a capacitor.
Capacitors should not have any oil or bulges on them.
HVAC Technician
EPA issued refrigeration license, College certificate, and 7 years in field.