Hi Ahmed Umer,
Welcome to Upwork! I checked and can confirm that your account was already approved. I suggest checking out this Community thread to help you get started along with the Freelancing Resources board for even more articles.
Regarding your agency, you should be able to create one by following this link, clicking the green 'Create New Account' button and selecting the 'New Freelancer Agency Account' button in the popup. You may also be interested in checking out these helpful articles to learn more about agencies and how they work on Upwork.
Let us know if you need further assistance.