I downloaded a model that already has a texture attached, why doesnt the texture appear on the model? My previous question was closed and linked to something about cycles, as I've just started using blender I have no idea what that is. I want to know why a model that already has a full texture map still appears as grey.
That's because you're in Solid view, where textures don't appear.
Switch to Material Preview or Render Preview and your textures should be there.