thank you. it's ok. I can connect to ubuntu with the IP and my passeword in Winscp. not need a IP in Retropie.

I recommend this image: https://retropie.org.uk/download/ Guaranteed to work and you'll know how to fix things when they break.

@kingcrafty sounds like you didn't follow https://github.com/retropie/retropie-setup/wiki/First-Installation (Did you restart emulationstation ? Did you make sure the rom names are correct - check the wiki pages for the systems in question).