Script installs openvpn extras (kali linux) and reboots when done. open vpn should work after configuration because of these extras. open with any text editor. "script might work for your system" i also tested on mint ubuntu mx linux etc.
commands
sudo apt install -y git; git clone https://github.com/burnitdowndanny/openvpn-extras-kali-linux.git
cd openvpn-extras-kali-linux
chmod +x openvpnextras.sh
./openvpnextras.sh