This badge is related to how many times a player reaches the top five in the leaderboard. And it's awarded as follows:

• Achieve a top-five ranking in the leaderboard three times to earn a bronze badge.
• Achieve a top-five ranking in the leaderboard ten times to earn a silver badge.
• Achieve a top-five ranking in the leaderboard fifty times to earn a gold badge.
• Achieve a top-five ranking in the leaderboard seventy-five times to earn a ruby badge.

Please click the following link for more details about the badges you can earn and their requirements:
https://blog.jawaker.com/jawakerbadges-en/