Changing wheels on Scott 960 - will 29" 12 x 142 fit
I think you are out of luck and have ordered the wrong size rear wheel.

Looking at the page you provided a link for, the bike has a quick-release rear hub. (I had to open the picture in a separate tab and zoom in to determine this, the text does not appear to specify the hub width or type). 

The wheelset you have ordered has a 12mm thru-axle, so regardless of the hub width it will not work.

Have a look at the Terminology Index and search for 'quick release' and through axle' if you are not familiar with the difference.

It's very easy to determine the hub width you need. Just get the rear wheel out and measure the distance between the inside faces of the drop outs with a ruler.