You have to make at least 30 activities to be able to rank up to jr. Member, but it still a little bit lower for signature campaigns, because most of all signature campaigns are don't accepts jr. Members and starts accepting in member rank and up. If i wear you, you should focus first on reading and researching more articles about cryptocurrency to be able to make a good and constructive post that will help you to earn merit for your next rank, because it already required some merits to rank up to member and higher ranks.