Before breaking it open I would put a socket on each bolt and see if any are loose.
On a new gasket installation (or fresh engine) with a cork gasket it usually is required to retighten the bolts at least one time.

If found loose snug them up and clean the engine at a coin wash.

THEN see where the leak comes from if still leaking. Don’t continue to drive it.
Windage will surely spread the oil around.