There are a few things you can do to remove scratches from a car wash. The first is to use a mild detergent and water. This will help to clean the surface and remove any dirt, dust, and other debris that may have been on the car. Next, use a scrubber brush to scrub the scratch area until it is clean. Be careful not to damage the surface of the car. Finally, use a dryer sheet or paper towel to dry the scratch area.