We get this question all the time and I’m happy to help guide you in the right direction =)
Once you are ready to start your business we recommend you look into creating a sole proprietorship or LLC. The price for this varies based on what state you register in.
Additionally we recommend you sign up for a US bank account and register for a tax ID (EIN), both of these are typically free.
You can easily apply for an EIN number online =)
Check out this link to see the startup costs associated with starting a drop ship business- https://www.dropshiplifestyle.com/whats-typical-startup-investment-drop-shipping/
If you are from outside the US, but want to create a US based store check out this link for the associated costs - https://www.dropshiplifestyle.com/drop-shipping-outside-the-us/