$ sudo apt-get install wireguard
In case you don't use Debian or a debian based distro, instead of APT, use your package manager to install wireguard.
$ unzip threeoc3R9****ZJXM.zip
$ sudo cp threeoc_ie1.conf /etc/wireguard
$ sudo wg-quick up /etc/wireguard/threeoc_ie1.conf
$ sudo wg-quick down /etc/wireguard/threeoc_ie1.conf