Looks dirty to me. There are tools available to clean the fins. Dirt on the fins reduce cooling/heat exchange.

Do you drive? Same thing with a vehicle’s radiator.

This is dirty condenser fins on the outside equipment. The coil is inside the air duct passageway inside, either an air handler or an adjacent piece of equipment next to the furnace.

Take a hose and give it a good squirt, starting at the top and working down, to rinse off all that muck. Doing so will make a big difference.

Dirty Condenser Coils Are the Culprits That Cause Many HVACR Problem.

https://www.airconditionersductless.com/

If a condenser coil is dirty or fouled, its ability to reject heat is severely affected.

Remember, the main function of the condenser is to condense the refrigerant vapor to liquid. Condensing is system dependent and usually takes place in the lower two-thirds of the condenser. Once the saturation or condensing temperature is reached in the condenser and the refrigerant gas has reached 100 percent saturated vapor, condensation can take place if any more heat is removed.

As more heat is taken away from the 100 percent saturated vapor, it will force the vapor to become a liquid, or to condense. When condensing, the vapor will gradually phase change to liquid until 100 percent liquid is all that remains. This phase change, or change of state, is an example of a latent heat rejection process, as the heat removed is latent heat, not sensible heat.