If you apply for long, having good credit score increases the chances of loan approval. If you apply for credit cards, having a good credit score gets you higher limit for credit cards. Credit score is the score that reflects your ability to use various access financial services like loans, credit cards, insurance, etc. When you have a higher credit score, you will have better prowess to use these services. There are different ways to improve credit score. The best one is to get a loan and the repay the loan in time, or get a credit card and pay full amount within the payment window.