How do i go about filing for visitation rights am custody of my child?

If no court order currently exists, you can file petitions for custody and visitation in the Juvenile and Domestic Relations Court where the child lives, so long as the requirements of Virginia Code Section 20-146.12 have been met. You should be able to walk in and file the petitions yourself, or you are welcome to seek the assistance of an attorney. Notice must be given to the other side, and the Court will then set a hearing in compliance with its procedures.