Your credit score, also known as your FICO rating, is a three-digit number based on the items in your credit report, such as collection accounts, credit cards, lines of revolving credit and home mortgages. Lending agencies and businesses use this score, which ranges from 300 to 850, to determine your credit risk, or the likelihood that you will repay your debts. A top credit score will qualify you for the best rates and terms on credit cards and loans, while a low score can prevent you from qualifying for a credit card, buying a home or even getting...