Nobody knows. But I like it better that way, because I like the surprise of getting a medal. It wouldn't matter how much content you've submitted, anyway, because it needs to be fanned enough द्वारा other users. So just प्रस्तुत करे a lot of good (Not broken, spam, inappropriate, या duplicate) content to a spot and if people like it, they'll प्रशंसक it. And sooner या later if आप stay active at the spot, you'll get a medal.
The medal system is a mystery to everyone on fanpop. No one can tell आप how many things आप must contribute to a club, except the F4, and I do not think they will be telling anyone anytime soon.
I'm sure आप asked this सवाल because आप want a medal. All I can tell आप is, contribute a lot. But don't add तस्वीरें that have already been added, वीडियो that have already been added. Make a bunch of good, thought out picks, add articles, links, the works. If आप add good content, people will प्रशंसक your stuff. This will help आप get a medal. So, get contributing, and you'll be sure to have a medal soon enough!
I don't think there's a certain number, but it helps if आप find content that everybody likes and that hasn't already been submitted. For instance if your प्रिय TV couple has their first hug या किस and आप see nobody else has पेश a picture of it, and आप have a picture प्रस्तुत करे it to their fanpage, chances are that प्रशंसकों are looking for that and will view and प्रिय it a lot, although it helps if the spot is really active too, so और people will see the picture.