Most websites also get the average seriously wrong, too. A FICO score can range from 300 to 850. There is a lot of misinformation on the internet as to what the average score is (many sources cite numbers in the 670’s).ost websites also get the average seriously wrong, too. A FICO score can range from 300 to 850. There is a lot of misinformation on the internet as to what the average score is (many sources cite numbers in the 670’s).