Metascore of 48 from 10 reviews
The critics are divided, three 70s and three under 50. However, critics rate action/sci-fi lower than viewers. Fifth Elements has metascore of 52, user score 8.9, imdb rating 7.8.
Rotting Tomatoes is 72%. I expect it will be popular with the targeted audience, imdb rating above 7.
http://www.metacritic.com/movie/valerian-and-the-city-of-a-thousand-planets/critic-reviews