There is no one-size-fits-all answer to this question, as the process of obtaining a car dealer license may vary from state to state. However, generally speaking, you will need to complete an application with your state's department of motor vehicles (DMV) and provide proof of insurance. You may also be required to take a car dealer education course.
Once you have obtained your car dealer license, you will be able to participate in car auctions held by licensed dealers. Keep in mind that there may be additional requirements, such as a clean driving record, in order to participate in car auctions.
It is important to do your research before applying for a car dealer license, as the process can be complicated and time-consuming. The DMV website is a good place to start, as it will provide information on the specific requirements in your state.