If I wanted to bring my son in a few days a week just to use your basketball facilities, what would the open hours be and what would the cost be?

Yup, or you could get an annual pass.

Youth 3 to 17 are 4 dollars and they normally try to have open courts all day

So they have 3 courts... and they have schedule slots for each of them... court 2 and 3 are open all day Mon thru Fri and Sat and Sun vary between times...Fees for your child if under 18 is $4 and above 18 is $7.... hopefully that helps...