Enable Customer Account
If you want to display Login and Register on the Header, You need to enable customer accounts
When you enable customer accounts, Shopify stores password-protected information about a customer's identity, order history, and current order status. Your customers' details, such as address information, will be pre-filled from the stored information during checkout. You can make customer accounts required or optional or disable them altogether. When creating an account, customers are redirected to a separate account creation page. Keep in mind that requiring customers to create accounts might decrease sales conversions.
Step 1: From your Shopify admin, go to "Settings" -> "Checkout and accounts".
Step 2: In the Customer accounts section, please click "Edit" and choose a customer account option:
Select "Show login link in the header of online store and at checkout" If you want to show the "Account" icon in the header.
Uncheck "Show login link in the header of online store and at checkout" If you want to hide the "Account" icon in the header. The Registration/Login function for new customers will also be hidden.
To complete the process, kindly click on the "Save" button.
