If your credit report or score will affect your insurance rates depends upon both your state insurance laws and insurance company's rating system.
If your state's laws allow insurance carriers to use your credit report as part of the rating system, and your insurance company in turn decides to use your credit history as one factor that they use to determine rates then if you have a good or bad credit score could affect your insurance premiums.
There are many variables that are factored in when determining a person's insurance premium and it can vary for each insurance company. To find out for certain what cam affect your rates call your insurance agent and ask for specifics. You may also consider contacting your state's insurance regulator to find out what state laws allow insurance providers to use when calculating auto insurance rates.
Factors That Affect Your Car Insurance Premium is an article in our learning center you might find interesting to read and for more information on credit reports and insurance rates read our article Understanding How Your Credit History May Affect Your Car Insurance Coverage.