Yes, 10 years old is too young and any woman would reject him based on that alone.
On a more serious note, there's no such thing as a 10, so don't even bother worrying about that. Just maximize your own looks through style and think of yourself as subjectively attractive.
But let me go even further and address what you're
really asking:
If there were such a man who looked perfectly attractive to all straight women (impossible), and if he had great game, could he still be rejected? Yes. He totally can. Rejection can happen for any uncontrollable reason, so make your peace with that fact and don't take rejections too personally.
Quote:
Todd told Tom the termite to tactically trot through the thick, tantalizingly tasteful timber.
What?