I have a maybe kid mother that wants me to give up all rights do this means I still have to pay child support.

Well first you need to find out if the child is yours or not.

Next you can't just sign over your rights, unless the mother has a new partner to adopt.

After that even if some way or somehow they allowed you to sign over your rights ( except in adoption) you still have to pay child support

First things first. Find out by DNA testing if this child is yours or not.