Will the screw holes be a perfect match for my guitar

The short answer is maybe.  

FIRSTLY, OFFER THE PCKGUARD UP AND CHECK THE HOLE ALIGNMENT. 

CARRY OUT ALL YOUR CHECKS BEFORE YOU REMOVE THE PROTECTIVE LAYER.

Usually, if you can see the hole in the body then you should be OK, if you have any holes that you cannot see then you can either return the pickguard or you can plug the existing hole with 3mm wooden dowel that you can get online (Amazon, Ebay) and drill a new hole.

Our pickguards are drilled to Fender USA patterns and that takes in Japanese and Mexican made and Squire HOWEVER not all guitars are drilled exactly the same and over the years (70's - 80's - 90's etc) the exact hole locations have drifted and there are 5,8,11 holes drilled over the shape of a pickguard and all you need is one to be off.