My claim information has been submitted to the insurance company for three days. What if there is no reply at all?

You can contact the claimant who handled your case directly and follow up the progress of the case. If you don't know who the claimant is, you can call customer service to find the claimant information. The insurance company needs to review the information you submitted, and the claims adjuster needs to deal with many cases, which may be too busy, so I suggest you track the progress of case handling regularly.