Oil pump priming question

So I checked all of the oil galley plugs they are all in. I also took the oil filter off and replaced it and while it was off I turned the engine over and oil is gushing out of that hole. The oil pump is new and appears to be working as oil is gushing out of 2 places (the hole to the oil filter and to the oil gauge). There is also no oil getting up to the rocker arms. Could it be a spun cam bearing? would that cause no oil pressure and no oil to the rockers?