systemctl status openvpn-client@config-name
...
   Active: activating (auto-restart) since Mon 2020-10-19 15:50:36 CEST; 15s ago
     Docs: man:openvpn(8)
           https://community.openvpn.net/openvpn/wiki/Openvpn24ManPage
           https://community.openvpn.net/openvpn/wiki/HOWTO
 Main PID: 19630 (code=exited, status=0/SUCCESS)
...