After your first 30 days your character receives a score based on their accumulated Rank, Fame and wealth. The score is calculated out of a total of 300 possible points and your character receives a title depending on how well they fared. You’ll get a brief little story-line associated with your character’s achievements around Vegas and be given the opportunity to upload your scores to the website leaderboards.
This score and the titles awarded through it are purely cosmetic and have no impact on gameplay, and you can play indefinitely beyond the first 30 days if you wish. Also note that if you run out of cash prior to 30 days you’ll immediately be awarded with your score since the game assumes you can no longer afford to continue playing.