Your pictures are TOO close up for my taste, but I looks like breather/valve cover leaking to me. So common, it's no longer considered a surprise OR a big deal.
You will be fixing this twice, the first time, you will do the repair without really paying attention to the experiences of those of us who TRY to tell you how to do it.

THEN, in six months, when it starts leaking again, you will take your time and do it right.
(I, of course, read Maxchion's warning, like the one I just wrote to you, and did it right the first time. I probalby had six hours in the fix, but here we are, six years later, and my engine is a clean as the day I did the fix).

IF it IS the valve/breather covers, start reading:
https://www.crossfireforum.org/forum...over-leak.html