@cyber92 What does 'not working' mean ? What files did you copy and what game are you trying ?
Make sure the .bin filename is correct and corresponds to the name in the .cue file. Linux is case sensitive so make sure it's the same name both for the on-disk .bin file and the file declared in the .cue - see https://retropie.org.uk/docs/PC-Engine/#pc-engine-cd for an example.