How to Create a Badge in Roblox and Award It With BadgeService
To create a Roblox badge, hover over your experience's thumbnail on the Creator Dashboard, click the ⋯ button, select Create Badge, then set a name, description, and a 512×512 icon. To award it in-game, call BadgeService:AwardBadgeAsync(userId, badgeId) from a server script, wrapped in pcall() .