@Brizio do you have a laptop? If yes, then just establish a SSH connection to your RPi with PuTTY for example :)

https://github.com/recalbox/recalbox-os/wiki/Edit-the-config.txt-file-(EN)

And

https://github.com/recalbox/recalbox-os/wiki/Connect-your-recalbox-to-a-CRT-with-composite-(EN)

Look, this is maybe something which is a little bi more complicated than in retropie (I do not know) but (a big BUT) everything else works out of the box in recalbox. Configuring retropie to your needs is much more a pain in the *** :)