Xbox Gift Card From Microsoft Rewards

If you have enough Microsoft reward points, then you need to redeem the reward points for Xbox/Microsoft Gift Cards on the redeem page of Microsoft rewards. Then once the gift card codes have been emailed to you, then you can redeem those gift card codes on https://account.microsoft.com/billing/redeem Once you have enough money from the Xbox Gift Cards, you can then purchase Minecraft from the Microsoft Store or Xbox Store (depending on which version you want).

The one that was refunded is a Microsoft rewards, not a gift card or code from Xbox

If you mean the gift cards from Microsoft rewards, you would need to contact their customer support. They are separate from the Xbox rewards program.

For help with the Microsoft Rewards program, you would need to contact their customer support via their redemption page. Rewards points can only be used to redeem gift cards through the Rewards program, not to be used to make purchases on Live. You would
need to save up enough to redeem an Xbox gift card and then use the money from that gift card.

Then why is the XBOX gift card from the microsoft rewards 23000 points and Microsoft store card is 23900 points? What is the difference between those?