Do you see it as a love story?
Do you agree that it is very violent? Do you know how many people die in the play, and why?
Have you seen any of the available movie versions? The two most famous are an old 1960s? version with Olivia Hussey as Juliet, and a recent one with Leonardo di Caprio and Clare Danes, which emphasizes the violence.
Now, assuming you agree that there is a lot of violence in the play, does this violence have consequences?
If you agree that it does, what are those consequences? (The body count is obviously one consequence, but you're probably meant to look deeper than that).
If you can answer these questions, you're ready to start writing your paper. If you can't, you need to go back to some version of the play and try to decide what you think.