Dune is a good movie. I liked many parts in it like its story (its political and economic contents), way of narration (storytelling), direction, acting, cinematography, sound effects, soundtrack, and lighting.
But there are some other things that I didn't like. What I didn't like (its flaws) is its excessive 155 minutes runtime. Also, I don't blame any person who was with me in the cinema theatre to have left the movie during the first one hour and twenty minutes. Why??? Because in the first one hour and twenty minutes, the events of the movie are very slow, and the center of the story is not clearly revealed. It starts to gradually reveal itself after these one hour and twenty minutes.
But at the end, I can't say that Dune is a bad movie just because of these flaws. On the contrary, it is a very good movie because of what I said above, in addition to its ending, setting up for sequels, and high production values. So when it comes to the score. I give Dune 8 out of 10.