Press +t on your keyboard. A Terminal window should open up.
Press Ctrl+Alt+t on your keyboard. A Terminal window should open up.
Enter the following command followed by Enter:
sudo apt install network-manager-openvpn-gnome
Next let’s open up the Settings app (GNOME Control Center)
If you have a .ovpn (OpenVPN file type) click the plus icon to the right of the VPN section then this window will appear. Next you would click ‘Import from file…’