Yes, you may wash your car. Below are some recommendations to protect the early stages of your new repair:
Wash the vehicle by hand with fresh cool water, apply only a very mild car detergent solution using a soft cloth or sponge. Washing your vehicle in the shade is a plus.
Do not use a commercial car wash.
Do not use stiff brushes or sponges, they can mar the finish and damage the surface.
Do not wax or polish the vehicle within 90 days. This will allow the finish to dry and harden completely.
Do not "dry wipe" your vehicle. Dry wiping can scratch the finish.
Do not drive on gravel roads or recently chipped roads. Chipping the finish is easily done in the first 30 days after your repair.
Avoid parking under trees and utility lines which are likely to attract birds. Bird droppings have a high acid content and will damage a freshly painted surface. Also, tree sap can mar or spot a freshly painted surface.
Do not overfill your gas tank, spilled gasoline, oil, antifreeze, transmission fluid, or windshield solvent on the new finish may cause damage.
Do not apply tools to scrape ice or snow from the newly painted surface.