How to create a video for a map?

On the map, it's one thing; there's a script involved. In the videos, there shouldn't be any scripts at all. And it's done very simply. There are several tabs (after you've created the scene). The first is something like "sound," the second is "effects," and the third is "animations." They are arranged in sequence, so you won't miss them. Just choose the one for effects. You should be able to figure it out from there.