There are only five states that currently require a mold license to remove mold growth, which are as follows:
New York
Florida
Tennessee
Texas
Louisiana
These courses are of varied lengths and might have different requirements and information depending on the area. You can often study at your own pace using online platforms with reading, video training, and quizzes to help you retain the information.
You will need to pay for the course, exam fees, and licensing fees to successfully complete your training and get your certification.
Every other state does not require a mold license by law, so you can remove your mold however you see fit. However, you should be aware that this could be dangerous without the correct tools and protective gear.
Your insurance company might also not allow you to remove mold without proper licensing no matter where you are in the USA. Failure to comply with your terms and conditions could result in fines or cancellation of the policy which will cost you more to sort out in the long run.