Help I have auto redeem 1 month xbox game pass ultimate thru Microsoft rewards it didn't...

I mean that it is on auto redeem for a free month using points. When you go to Microsoft Rewards on the Xbox and click redeem, it gives you an option to auto redeem the the Ultimate game pass for 10,500 points

This leads me to believe I need to purchase a standard non-auto-redeem 1 Month Game Pass Ultimate subscription (for 12,000 MS Rewards Points) AND THEN on April 1, and the months following, my 10,500 MS Rewards Points a month Auto Redeem will register.

Pretty much this. You've turned on auto-redemption for that award, so if you have that number of points, they'll automatically send you a code for that on the first of each month, so you would get a code on April 1. To get a code now, you'd need to manually redeem Ultimate.

This leads me to believe I need to purchase a standard non-auto-redeem 1 Month Game Pass Ultimate subscription (for 12,000 MS Rewards Points) AND THEN on April 1, and the months following, my 10,500 MS Rewards Points a month Auto Redeem will register.

Pretty much this. You've turned on auto-redemption for that award, so if you have that number of points, they'll automatically send you a code for that on the first of each month, so you would get a code on April 1. To get a code now, you'd need to manually redeem Ultimate.

Ahhh I see. Anyways, thank you for taking the time out of your day to respond, I really appreciate the quick reply to help clear all this up for me. Have a nice day!

To get the game pass ultimate, you went to the redeem section of Microsoft rewards and find the Game pass Ultimate 1 month reward for 0 points. You select it, and then you would have got an email with the code for 1 month. If you didn't do this, then chances
are it has now expired. Check anyway, the reward might still be there.

Being as this promotion has nothing to do with Xbox, you would need to contact Microsoft rewards support about this issue.

https://support.microsoft.com/supportrequestform/cf50b787-a987-a7ff-133c-6c4e3f638013

From what I have read, you log in on Microsoft rewards, and redeem the tile that shows up for 1 month of game pass ultimate, it will not cost any points.