I have a 2001 2320. Front pump can be accessed on mine in,the bilge,below the round access plate directly between the seats (helm and other) in the cabin.
If you have a forward pump, it will be located just under the deck plate in the cabin floor as seen in these photos.
The discharge for that pump will be on the starboard side, amidship, right above the water line.
I recently looked at a new 2320 and I don't remember seeing an access plate in the cabin. I just remember seeing the drain hole. I think just like the 2120's, it doesn't have a front pump. As mentioned, the anchor locker and cabin drain all flow down to the main bilge area via a PVC drain line down the keel.
I have a 2011 2320 and haven't found a forward bilge, haven't looked my bilge is always dry. I have hosed the cabin down and the water drains to the rear bilge area.