Settle Scores is an idiom that means to take revenge or to get even with someone. It is usually used in a negative context, as it implies that someone has been wronged and is seeking retribution. The term can also be used to describe a situation where two people are competing to prove who is better or more successful. In this case, the crossword solution for the term is 'AVENGE, ' which is another way of saying to take revenge or to get even.