Letter Of Community Service Hours Can I Pay Restitution With Community Service Hours?

Can i pay restitution with Community service hours? - letter of community service hours

Im 15 and was a crime in the city of Aurora, Colorado, accused for "criminal damage", I have 30 hours of community service, I have to go to that class ISAE Saturday, I must write a letter excuses for my school, and the judge told me that I have to pay compensation if the school wants to pay compensation can be $ 500

My questions are
If I pay restitution, can I buy with community service hours?
If I have to pay restitution to the court, how long will I pay my refund?