Watching movies is a fun way to improve listening. If vocabulary is more of your focus then I would read more. Also watch a movie the first time without subtitles or just dont use them at all if possible. If you depend on the subtitles too much your listening won't improve much.

this question is grammatically incorrect. the action your doing (Watching) in this case is not plural. and you are referring your verb to your noun which is watching and is singular. Is Watching English movies useful ? for example; Is studying hard ? ----- does not matter even if you add ( lessons) to it: IS studying your lessons hard?. hope this helped! if you have any other questions feel free to ask! and yes watching English movies is one of the best ways to improve your listening.

I think movies would be good for learning. It is a good way to see how people really speak. Since a book would probably teach you perfect english which people never really speak, when we usually speak we speak with fragment sentences, slang, and different things. So a movies would help to see how regular English people speak. Also the vocabulary in movies are usually similar to what we use in our daily live, depending on the movie of course.