So I just installed the 2K texture mod and its not showing up in the data files when i start up skyrim, is this normal, because I noticed that a lot of things have been improved in game after just testing it ou. Is there something special i need to do in NMM to make them show up, or do they just run in the background?

SkyrimHD 2K now comes as loose texture files and doesn't have an esp file.

It should show up in the "mods" tab of NMM, but won't show up in the "plugins" tab of NMM or in the launcher.