What can I do if I now need child support help 4 years later after already have gone to court?

You can either hire an attorney or ask the Attorney General for services in order to get a child support order in place. No one will be able to make him see the child, though. However, you can use his lack of visitation to ask for more child support. There's no guarantee that you'll get extra, but I have seen judges consider the issue. If he's not taking the child during his time, that means you're paying for the child's needs during the time when the father should be doing so. That's a good argument to ask for child support to be set at higher than guideline support.