Unfortunately unless you have a Student Account via your parents, legally you must 18 or over to have a PayPal Account. Just for info, if you do not or cannot verify your PayPal Account, you won't be able to do much of anything with it.
Here's a snippet from the User Agreement:
2. Accounts.
2.1 Eligibility. To be eligible to use the PayPal Services, you must be at least 18 years old and a resident of the United States or one of the countries listed on the PayPal WorldWide page. This Agreement applies only to Users who are residents of the United States. If you are a resident of another country, you may access the agreement that applies to you from our website in your country.
