Are you able to go to all websites (including non-Google) if you turn off OpenVPN? If so, there is something wrong caused by that setup.
Are you using a commercial VPN server (e.g., NordVPN, ExpressVPN, PIA, etc.) or a private VPN server? I suspect a problem with DNS, so see if you can open the webpage: https://1.1.1.1 (which is CloudFlare).
You can also post the OpenVPN config file here with certificate/key and private information redacted.