Scoring is the process of giving a standardized mathematical score to a person's credit. If you get a low score, it will be harder for you to get a loan or credit. If you have a higher score, it will be easier for you to get credit and you may even get better interest rates offered to you.
This score represents how good of a risk they think you are, but does not come with a standard credit report. If you are thinking of buying a house, car, or other item you should add this to your report. It is very possible that your score could be the determining factor for your creditor, so you should get it yourself.