The ??????? (dickey? this is not a part of a car!) was only damaged a little and there was a scratch to the paintwork on the back of the car.
Notes: a "guard" (note spelling) suggests a security guard of some kind, not normally the person who parks your car for you. I believe that in the US, this is known as "valet parking" but I'm not entirely sure what the job title is of the person who actually parks the car. It's not common in the UK.
Student or Learner