Raspberry Pi Compute Module 4, Dual Gigabit Ethernet NICs

I have a Mini Router/PC with Raspberry Pi Compute Module 4, Dual Gigabit Ethernet NICs, 4GB RAM/32GB eMMC,
Support OpenWRT
I am trying to setup Wi-Fi and use openvpn and share out the Ethernet port to have a hard wire computer
so, when I am on the computer it will go thru OpenVPN I am hoping someone can help me with this
Thank you