This tutorial shows how to add missing user menu to your Shopify store.
When you activate 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.
Open admin panel, navigate to Settings -> Checkout.
In the ‘Customer accounts’ section, choose a customer account option, click the Accounts are required/Accounts are optional.
Accounts are disabled
Customers won’t see the option to create an account or to login. They’ll have to manually enter their details at checkout, because fields won’t be pre-filled.
Accounts are optional
Customers can choose whether to create an account but it’s not mandatory for checkout. If customers do have an account and they’re logged in, their address fields are pre-filled when they place an order.
Accounts are required
Customers must have an account and be logged in to place an order. This setting is useful if you’re running a wholesale or members-only store, for example. Address fields are pre-filled when the customer places an order.
Click Save changes to confirm your change to customer account settings.
Feel free to check the detailed video tutorial below: