Question I bought a new Corsair vs 550 my case doesn't support th fitting screw

You might want to list your specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:

Couple your post with a picture of why the PSU sin't dropping into the case...? Host the images on IMGUR and then pass on a link to the images here.