would it be illegal to lie about your age and make money on the ad revenue program/support program?
Yes.Yes it would.Don't be dumb.
In most places, you need to be at least 18 to open a bank account or need parent or guardian to open it if you're a minor. And PayPal needs bank account.
It should be illegal not to think before asking a question
That would be fraud.
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Yeah it would be illegal...Tapas could get sued and in return would not only ban the minor from the site, but could possibly take legal action against the minor's parents if they deemed it necessary; as @KevinReijnders said, it's fraud & criminal charges could be pursued as well so I'd advise against it.
Is it illegal to lie in a legally binding contract? Yes.
Patience, young padawan. I've been in your shoes and know how frustrating it is to have to wait until you're 18 to start making money online, but you'll get there in due time.