How to forward a port on a VPN client?

Question

linux

There is a VPS Ubuntu 20.04. It has a white IP. There is a PC, a game server will hang on it. You need to connect a PC via VPN to vps and configure some port forwarding. PC on Windows 10, there is a VMware virtual machine on Ubuntu 20.04, on which the server is installed. I tried to connect the virtual machine to the vpn softether vpn network adapter, but something went wrong. Please tell me how to do this, preferably without any strange incomprehensible things, plus the vpn server and client must be restarted after a reboot. Thanks in advance, if anything, I'm more or less friends with the terminal. (I mean, not a teapot, but I don’t know very much). Googled, didn't find anything.
PS I'm a noob who loves GUI, so I really want to use SoftetherVPN. There it is possible to implement it, the question is how? Autostart can be configured in a clumsy way via Webmin after starting the system, execute the command ./root/vpnserver/vpnserver start