child support?

my sons father doesnt want to help me and wants to guve up his rights because i dont want to be with him and i dont think thats fair because he has a huge settlement and i need help and i would ask him for help he tells me he will give up his rights. If i apply for child support will he still be ordered to pay child support because this isnt fair!! Everyday hes telling me im going to suffer and its not fair at all , he constantly dangles how he has 100 k in his account because his mom died in a hospital.. regardless of the fact, men should not be able to run from responsibilities!!