There is no mod to make Starfield free of loading screens, the cell structure of the engine demands loading screens. A mod exists that introduces real space faster then light travel between planets in a system yes, but that mod a) destroys the storytelling and lore of the game completely b) it still has the loading screen to land on the planet and c) changes a quick load screen with a boring travel through empty space.
It is like changing a stage change cut to black in a move with a real time travel scene with nothing at all happening but watching the people drive.