How can i earn points

how can i earn points .in case to buy something extant page's size .decline adds etc what should i do

You don't earn points. They can only be bought by you or members. Admin panel > misc > points

The points that you see rising on your Admin panels main page, are just forumotions points that they give to your forum for certain things like number of users, number of topics, number of messages. These points only help place you on the search list of forumotion forums in whatever category you signed your forum up for.

If you wish to have all the little perks of having your own domain name or even increasing the size of your gallery, then you will need to purchase those points. There is another thread here, not sure where, but you can do a search for it, that tells you how much the points cost and how many points is required to purchase any of the upgrades.