If my girlfriend in jail and I paid her bail $2500 to get out she had a court date we went to it she paid her fines but we never got the money back they said they will send it to us but never did what can I do to get my money back?

I would call whomever you paid the bail to and ask them. If they aren't helpful, call the Clerk of the court where she appeared and ask them, or go to the courthouse in person and ask. Each jurisdiction manages these situations differently, so it all depends on how they have their system set up. If you have a copy of the court order you might need it to demonstrate that the matter was heard and resolved by a judge.