By default WordPress not allowed to register anyone on your WordPress site. If you want to allow your site visitors to register and log in on your WordPress site, then keep your close attention in this tutorial as I am going to share how to allow user registration on your WordPress site
Follow the below steps to allow your site users to register on your WordPress site.
Step 1) Login to your WordPress Admin and navigate to the Settings => General page and go to the “Membership” section.
Step 2) Now check the box next to “Anyone can register” option and click on “Save Changes” button.