Assuming it is a state court judgment that is not related to domestic support, the state court does not have the authority to order the federal government (IRS) to divert your tax refund.
A garnishment or levy is nothing to fool with. The levying agency (state, federal, local child support) can access your checking, savings, and other accounts, so it is important to respond immediately. There are ways to stop or delay garnishments, but it requires significant action, and immediate action. Are you a defendant in a divorce case, a civil case or a tax levy? Who is the "they"?
