I am trying to make a sentence with "If so".
Do you still have the scooter that was damaged in the car accident? If so, did you send it to the repair shop to fix the damage?
"to fix the damage" is not an error, but it is redundant. There would be no other reason to send the scooter to a repair shop than to repair the damage. "Did you send it to the repair shop?" You might also say, "Did you send it to the shop for repairs?"