Hey
I am forwarding port 8080 like any other. And it works for ssh port for example.
But doesn't work for wss on port 8080

requests like ws://example.com:8080 - working
requests like wss://example.com:8080 - don't work

when requesting wss://example.com:8080 on the server, I see some connections, but it does not work
help please, how to forward the websocket SSL?

It has nothing to do with router and port forwarding (router doesn't care what's inside connection), it's up to target server, whether it supports SSL on given port.