Most credit scores – including the FICO score and the latest version of the VantageScore – operate within the range of 301 to 850. Within that range, there are different categories, from bad to excellent.
Excellent Credit: 750+
Good Credit: 700-749
Fair Credit: 650-699
Poor Credit: 600-649
Bad Credit: below 599
via What is a Good Credit Score? | Credit.com.