Learn how to get free Roblox gift cards that you can redeem for Robux using Microsoft Rewards. In this step-by-step tutorial, I’ll show you how to set up an account, how to earn points, and how to redeem your points for free Roblox gift cards. Microsoft Rewards offers free points for searching on Bing using the Edge browser. You can earn up to 270 points per day. You need at least 1,500 Microsoft Rewards to earn 100 Robux, which takes just under a week. This is currently only available in the United States, Australia, United Kingdom, Germany, France & Canada.