Many people do not know about the credit scoring system—much less their credit score—until they attempt to buy a home, take out a loan to start a business or make a major purchase. A credit score is usually a three-digit number that lenders use to help them decide whether you get a mortgage, a credit card or some other line of credit, and the interest rate you are charged for this credit. The score is a picture of you as a credit risk to the lender at the time of your application