Very common. Straightforward replacement but bit of a knack to getting it right. Need to put a few blobs of sealer where the gasket rises over the hump. If the leak is mainly that end it could also be the coil pack o-ring , not a big bother either.
Sure there is a guide in the sticky section for the rocker cover gasket.
ROCKET cover
lololo
you posted in wrong topic, but good videos