If you're a Warcraft fan, it was pure nostalgia and ways to see characters and locations put on screen which was very cool. The CGI was actually really good compared to shit like Jurassic World and Avengers.
As a movie it was trash. If I didn't know Warcraft I'd probably give it 2/10 for the graphics and fight scenes. I would NEVER recommend it to anyone who doesn't know the universe.
If you do, you're already going to see it so it doesn't matter
So I give it Warcraft/10