I believe I am a father, however, my name is not listed on a birth certificate. A mother doesn’t let me see a child unless I send her money.DNA test?

You are absolutely entitled to commence a proceeding to have a paternity test. If the child is yours you are also entitled to a court-ordered visitation schedule. While you are obliged to pay child support if the child is yours your entitlement to visitation is not dependent upon your payment of child support. If the paternity test shows you are the father, you will be responsible for child support but also entitled to regular visitation with your child. The regularity and schedule of visitation will depend on where you and the child's mother/child are located.