It is inaccurate to Shakespeare's play because the ending scene where romeo dies in inaccurate and the setting is in a morder time era in Los angelies where as Shakespeare's is in old days
Shakespeare certainly wrote the play Romeo and Juliet, unless you subscribe to the theory that someone else wrote all of his plays under his name. Shakespeare did not invent the plot of Romeo and...
Juliet is about two weeks away from her fourteenth birthday. As for Romeo, the text doesn't disclose his age, although he is clearly not very old and is probably also in his teens.
From the fact that two quarto editions were printed in Shakespeare's lifetime, it appears to have been reasonably successful, so he was likely satisfied with it as a moneymaker.