O.K!
If you do a fresh install of Windows you'll have to download from Microsoft and use a USB stick to install it. You can then set that to install Windows to the new drive instead. IIRC it should format it ready for you as you do this.
Always advisable to make sure to back everything important up to an external before you start messing with things though. Any programs that were installed with the old Windows on that drive will need to be installed again as the new install wont see them. You'll be able to use diskmanager later to either reformat or rejig the partitions on the old drive.
You could also clone the old Windows install drive to the SSD using software like Macrium reflect free and use the same Windows installation. There are plenty of tutorials online on how to do it around. I'm not the best one to guide you through tbh, I had some trouble doing this with my BIOS and ended up just reinstalling to the new drive.
One last thing, I had lost my M2 drive installation kit from my motherboard, there's a kind of riser nut and a screw. I had to buy one from Amazon to install the drive. Something like this, I believe they are universal.
Good luck
🙂