Please add some actionable info to your post - what games/emulator are you using ? Also, when asking for support, please include the info requested in https://retropie.org.uk/forum/topic/3/read-this-first.

@Fantomas Only a few PS1 games used passwords exclusively (Doom comes to mind)..most games used the memory card. In those games you can save the game just like how you would do on the original hardware. You can use savestates (save at any point in the game) in all games.