On Bing.com and on Microsoft.com, check your Microsoft Rewards point counter, next to your account name. If you don't see it, make sure you are signed in to your Microsoft account.
If you've recently made a purchase at the Microsoft Store, retail or online, you can also view detailed info on the points you’ve earned by shopping with Microsoft. Sign in to your Microsoft account, and see Shop & Earn History. Note that Microsoft Rewards points will expire if you don't earn or redeem anything in 18 months.