I have a oil leak on my top fitting looks like the top screw on the supercharger is strip not sure where to find parts at.

Looking for top line and the screw that goes into the supercharger and washer.

Any help would be appreciated it's the only thing I need to get my s2k up and running.

 

https://www.superchargerrebuild.com/accessories/

Scroll down to "Oil Injector" - you can also specify that it's for a Novi.

Seems like you'll need an AN fitting to screw into this one; looks like an updated part due to issues people might've had like yours? So instead of having to replace the whole thing it looks like you'll only need to replace the AN adapter if you have a similar problem in the future.