The easiest way to install WP bSecure plugin is to search for it on your site’s dashboard or you can also download from here.
Log in to your site’s dashboard (e.g. www.yourdomain.com/wp-admin)
Click on the “Plugins” tab in the left panel, then click “Add New”.
Search for “bSecure” and find the plugin at the top
Install it by clicking the “Install Now” link.
When installation finishes, click “Activate Plugin”
Go to the settings section of bSecure within the WooCommerce settings page
Add in the API Key & Credentials from your bsecure account on https://partner.bsecure.pk/integration-live
Now go and test it out on your website!