You may not be able to raise 500 fast as a kid,
as that is quite a bit of money for most persons.
It will take some time.
You may be able to perform some chores around the house,
and also perform some chores for your neighbors.
You can even try doing some part time jobs where possible to assist you in earning money towards your 500 dollars goal.
Depending on what you need the money for,
some persons may pay you a little bit more for the chores,
to help you achieve your goals faster.
I hope this was helpful to you.