A credit score is a number that reflects the likelihood of you or your business paying credit back. Lenders like banks and credit card companies will look at your credit history when they calculate your credit score, which will show them the level of risk in lending to you. The higher your credit score, the more chance of being accepted for credit, at the best rates. More information can be found here: https://www.experian.co.uk/consumer/experian-credit-score.html