move windows

So a few days ago I received a 1 TB samsung 980 NVME SSD, and it is much better and bigger than the one I have that boots my OS, which is only 240 gigs and is slower. How can I transfer the OS to the better drive and how can I do this? (They are in the same PC)

So I recently just built my pc only with hdd for the meantime cos Im out of budget, I also bought a windows digital license key for windows 10. And now I've bought me a new ssd and I'm planning to move the whole windows os from my hdd to ssd, will that void my windows key (is it one time use?)...