why every time I do a coment on the forum does not get into the activity and partly to my post in delet by admin .
Your pot will more likely be deleted if its a spam or it is unnecessary post. If you want a post to stay, be constructive.
As for the activity. As a newly created account you will have 14 potential activity. Make 14 posts and that will give you 14 activity. For the next activities you need to wait for the next activity update which is every 2 weeks. Right then you need to post atleast one to get 14 potential activity. If you manged to have 14 post that week then you willnow have 28 activities.