First, you need to be logged in to your WordPress Admin Account by entering the admin url that has been provided when you installed the WordPress. For example, www.example.com/wordpress/wp-login.php.
Once logged in, it will redirect you to the admin page of your WordPress site. Hover your mouse to the “Plugins” button and click on “Add New”.
Then the Add Plugins screen will show up, giving you the option to search for the plugin you wish to install. For this article, we will install “Wordfence Security” (A WordPress Firewall and Malware Scanner).