If you have any interest at all in Star Wars, please, please take your child to see Episode #7 in the theaters. It is absolutely amazing. I was on a movie high the rest of the day and am already super excited for the release of Episode #8 (May 2017). The movie is rated PG-13 and my daughters are 9 and 5. Our 5 year old handled it fine. There are obviously some fighting and death scenes, but no bloody scenes to worry about.
Did I say you should see this movie in the theater yet? :-)