There's no such option in WinSCP scripting.
But it's easy with WinSCP .NET assembly.
You can use Session.EnumerateRemoteFiles:
https://winscp.net/eng/docs/library_session_enumerateremotefiles

Hi, I don't use linux or bash so a bit of a noob here. When I do a list -a i get very limited results without it showing what's in the sub folders and some files are simply skipped altogether. I'm using the winscp terminal to run the command.
I am trying to list everything and anything on a server which we are looking to take down.