The basic FICO score stops at 850.
FICO has specialty scores targeted for different lending sectors. For example, a credit card lender is mainly concerned that you make payments on time, while a mortgage lender might be more concerned about your overall debt to income ratio. So FICO has some sector-specific scores. These max out at 900. You have to read the fine print each time to get a score to see which scoring model is being used.