I found in Logic Pro X, Preferences > Plug-In Manager and found Manufacturer and for Neural DSP, checked the box use.
What else do I do? I googled:
how to use neural dsp guitar simulator in logic pro x
But did not see how to do it.
I did most of LinkedIn’s 8 hour course on Logic Pro X but I didn’t see where it says how to add a guitar plugin for your guitar track.