So I finally got all my hoses and parts in for my radiator swap. I'm putting it all back together now and there are 2 different types of Torx screws for the car.

So where do each type go?

One has a built it washer/spacer type thing.

 

Can't tell where exactly the screws go but the one in the 2nd pic has a shoulder.

This is used to align whatever the screw goes through a diameter -- a shoulder -- to fit to. This helps locate whatever the screw goes through more accurately, precisely, and generally more securely.

You have to look at what the hole looks like. If it is about the same diameter as the threaded portion of the screw the 1st screw is used.

If the hole diameter is larger or there is a diamete for the screw's shoulder to fit into, the 2nd screw shoud be used.

 

front or rear bumper screws...

 

Just about to say the same thing.
Check your bumper for missing screws including inside the fender.

 

Are the shouldered ones the bumper screws?

 

I know the one with shoulder goes in the fender - top. also the one with the shoulder will have an larger opening