Hey @usernrD4Bi1IxE, I hope you're doing well.
The 3D Scanner app is available for download via the Samsung Galaxy Apps store. Simply search "3D Scanner" and it should come up. (Please note that some carriers seem to have this resricted at this moment for some reason but it should be available to all in the next few days.)
The scanner is available for carrier devices in the US but should roll out to unlocked devices soon.
I hope that helps!