The score range on the LSAT is 120-180. The average score is approximately 150. A score of 165+ is generally competitive for the top 20 schools. A score of 165 is in the 92nd percentile ranking. A good LSAT score is one that will make you competitive as an applicant to your top law school choices.
You will be asked to submit two or three reference letters with your law school application (you can submit more, if you want). Start thinking about who you will ask early on. You will want to give these references at least one month and ideally at least 6 weeks to complete your letter. They will send the letter straight to LSAC; you will never get to read it. Make sure that you ask someone who will write you a strong letter. It will be helpful to have professors as reference