My car won't start and computer doesn't scan on 2001 Lincoln Town Car

Asked by for the 2001 Lincoln Town Car
I would need a little more to go on, what lights up, what doesn't, does it turn over or act like dead battery, etc... recommend getting it to shop. i do not like to guess but could be a main relay. it would turn over, have no fuel pressure and may not supply power to ecm so won't scan.