As per reports so far 3D Scanner is mostly available with some Carrier devices, for Unlocked devices Samsung may soon send out update to include the 3D Scanner. Also have you tried searching for 3D Scanner in Galaxy store and see if you can download it from there. If not just have to wait for an update to get the 3D Scanner.
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Hey @user3d6Li60xPG. I hope you're doing well.
I answered this question already here in this thread. https://us.community.samsung.com/t5/Note10/3d-scanner/m-p/794310#M922
@SamsungRei can we merge this thread with the one I linked above? I already answered this question there. 😄