@Darksavior
Also I have experimented a problem about gpu_mem, when you set it to 256 (which i don't really think is reasonable for pi zero 2, but I have tried) then emulationstation is not loading, instead it is in a constant 104% cpu using state.

@buzz hi have reread and now its working just need to search about adding games .

Thanks

@cbr_greg Please re-install from the Pi4 image provided in retropie.org.uk/download. If you want to use the desktop, then you can install it as indicated in the Docs.
Before attempting to overclock, just run the games you're interested in and see if you really need to overclock.