After every job, the hiring manager rates you based on how well you performed. This is extremely important because when other hiring managers look to hire you for another job, the first thing they look at is your rating.
Take any feedback as constructive criticism, like a guide to help you decide what to focus on improving. Maintaining a 5 star rating will ensure that you will be consistently hired for jobs and making money. Anything more than 4.8 is great! If your rating drops below 4.8, you may want to consider ways to improve it. Consistently low ratings can put you at risk of deactivation.