In literature, "point of view" refers to the narrator's perspective of events. In a play, the playwright presents the events to an audience who has to make its own judgment, obviously based on its perspective of what unfolded on the stage. Audience members may then have different individual perspectives and thus different interpretations.
One could say that in Romeo and Juliet, the main point of view is expressed in the prologue, by an actor or the playwright who states:
The fearful passage of their death-mark'd love,
And the continuance of their parents' rage,
Which, but their children's end, nought could remove,
Is now the two hours' traffic of our stage;
In this instance, there clearly is a narrator and he/she distinctly states a point of view about the events about to unfold on stage. The metaphoric language is rich in references to the tragedy about to be presented and the good that came from it.
In a novel, this narrator would have been a third-person omniscient storyteller who would have been present throughout, informing the reader about the thoughts, feelings and actions of all the characters.
In this play, however, the narrator serves a minor role and only introduces the audience to the tale about to unfold and then disappears, choosing to let the story tell itself, by presenting the characters to the audience where they also, throughout, present their own perspectives in first-person narratives.
In a play, events and actions are presented to an audience based mostly on the writer's perspective. One can conclude, then, based on the above, that in Romeo and Juliet the main point of view is that of the playwright in the guise of a narrator who features only in the prologue.