Yes, if he's over 18 and plans to see his child. If he doesn't, then he legally has NO rights to the child. Which is legal also... if he refuses to pay child support, then he gives up his legal right...
Different states have different laws. Some allow for a non-custodial parent to get a breakdown of what the cs is spent on, some do not. Check your local laws.
In general, child support is a percentage of net income. In Illinois, for example, it's 20% of net income for one child, 25% for two, etc. Income includes almost everything, including overtime,...