The static judges do not take into account the cockpit detail. However, it may sway them a bit in craftsmanship points if you at least have some detail in the cockpit, bare in mind you must have a scale pilot. Think about it this way, if you are going to the effort of panel lines and rivets why not at least do some detail to the cockpit as well. The closer your plane is to scale, the more impressive it is. All other external detail needs to be included for maximum static scores. For example, pitot tube, antennas, access panels, etc. If you have any thoughts regarding competing at Top Gun, the craftsmanship judge can get as close to the model as he wishes without touching it. Again, the more detail, the more realistic, the better your scores will be.
One other note, just to be clear. To qualify for the Scale Masters contest you must compete in a qualifying class at a scale contest that is a regional qualifier. The classes typically are expert, designer or team. To fly in fun scale or sportsman is great fun and good experience but it will not get you qualified.