Are you booted into windows?
If not try running the Win10 installer to the point where is asks where you want to install to and see if the drive is now listed; if it's there - exit. Bios typically wont see an nvme drive until it loads a driver for it.
If your BIOS has any type of compatibility support(like mine does) you would need to disable it before the ssd is detected, or do what popatim said:
Are you booted into windows?
If not try running the Win10 installer to the point where is asks where you want to install to and see if the drive is now listed; if it's there - exit. Bios typically wont see an nvme drive until it loads a driver for it.