how many days it will take to reach $10 here?

It depends on how much time I'm able to spend here and whether I start discussions of my own or just respond to the discussions of others. I have been here for over a year and have missed payout only once, because I was too busy to come here very often. I'll probably miss it this month, too, because I haven't been here as much. You should also take advantage of the Tasks tab...especially the writing assignments.