once I have done the first things in my worldspace and I have generated LOD and I want to pass my mod to someone else who test it, how do I pass all the files needed to view LOD in game?
Do I have to pass all the entire folder data>meshes, data>textures, data>lodsettings or can I put all together into one file maybe a BSA?

You could use the Creation Kit to create a BSA archive and send the .ESP + .BSA to the people (Then they could use a BSA Extractor), or Create a Loose-file Archive using WinRar, 7-zip, or any other Archive File