Insurance scores range from 200 to 997 with 200 being the lowest insurance score and 997 being the highest insurance score.
So obviously a insurance score of 997 is the best auto insurance score to have but even a 600 to 700 insurance score is a good auto insurance score.
Your insurance score is based on your credit score so if you have a higher credit score then your insurance score will usually be high as well.
If you have a low credit score then you'll have a low auto insurance or insurance score too.