I have a blog (2earnsomecash.blogspot.com) but i don't know how to deplace my adsense or placing adward and other script + i can not find (add page element)in my blogger account so please if anyone have a solution
Just go to the dashboard of the blog and hit layout and you will see page elements and then Add and Arrange Page Elements. Once you get there just click add element on either the bottom or side bar and drag it where you want it. It is one of the easiest interfaces to use in blogging.
Are you using an older blogger account or the new one that is tied in with a google account? Unless you changed something with the template or html code, your dashboard should have a place for layout.