For the purposes of this answer, I am assuming you are an adult and not a minor.  If you are an adult, yes you are entitled to your settlement funds.  I would consider suing your father as a last resort.  However, if you had to, yes, you could sue your father.  If an attorey was involved in your settlement, I would suggest you go back to that attorney and ask for assistance.  If not, I would consult with an attorney first and discuss all of your options before moving forward.   Good luck to you.