Open the App Store and search for "wireguard" to find the WireGuard App and download & install:
Open the WireGuard App:
Login to the Settings page and right-click on the Download link and select Download Linked File to download the WireGuard settings file.
In the WireGuard App and click on the Import tunnel(s) from file button, browse to the Downloads folder and select the wg0.conf file. Click on the Activate button to start the VPN tunnel.
Open your browser and browse to a page that will show you information about your IP address e.g. https://iplocation.io to check the VPN is working and you're emerging from the country of your choice.