Put a finger in it. Clear water with no smell, on a day you used the air conditioning, is condensate off the evaporator draining where it should. That is the AC working, it costs you nothing, and we will tell you so for free.
Green, pink or orange and slightly sweet is coolant and wants looking at this week. A brown or black smear is oil. Red and slippery is transmission or steering fluid. Bring the car and we will put it on the ramp and find where it comes from before anyone quotes you anything.