Any score above 700 is a good credit score and it is a clear proof to the lenders that you are responsible with your credit. By improving your credit score from 700 to 800 will get you good offers on loans and credit cards.
You can have a good mix in your credit portfolio i.e. credit cards, auto loan, personal loan or home loan etc and consistent repayment track record to increase your credit score. Avoid applying for multiple loans in a short period of time because too many hard enquires might have an impact on your credit score.
God here if you wish to know what are all the benefits of a maintaining good credit health