You’ll often hear that credit scores of 700 and up will get you best customer status with lenders. You should aim higher. For the lowest rates and best terms, you need to get your credit score above 740 (the top FICO credit score, by the way, is 850), so keep that target in mind.
Each of the big three agencies, TransUnion, Equifax and Experian have their own credit score. For example, TransUnion offers a score that reaches up to 990. Further, lenders often tweak the scores provided to them by these companies. So an absolute number may not be the most relevant piece of data a lender is using to determine credit worthiness.