How Can I Install the Afterpay WooCommerce plugin?
Do the following:
Navigate to WordPress Admin Dashboard.
Navigate to Plugins > Add New.

Type Afterpay into the Keyword search box:

Locate the Afterpay Gateway for WooCommerce plugin and click Install Now.

Once the installation is complete, click the Activate button.

For developers interested in using the Afterpay WooCommerce Plugin in local development, click this link.