The number of story points per day varies. It could be as few as 1 if the content is complex or as many as 15 if things are going smoothly and you have a clear plan. It all depends on your writing speed, the complexity of the story, and your available time.
It really depends on various factors. Sometimes you might manage to cover a lot, like 10 or more, but other days it could be fewer, maybe only 2 or 3.
Well, there's no fixed number of story points per day. It could range from 5 to 10 on an average productive day. But if you have distractions or the story is particularly challenging, it could be less.