To register an eBay store, you first need to create an eBay account. Click the "Register" button on the eBay official website, and then fill in your personal information, contact information, payment method, etc. according to the prompts.

After registration, log in to your account, click the "Seller Center" option on the "My eBay" page, select "Start Selling", and then select "Open a Store".

Choose the store type according to your personal needs, and fill in information such as the store name, description, and shipping policy.

Next, select the product categories to be listed and set pricing, etc.

Finally, verify the store information and select the payment method to complete the registration process.