Your profile was accepted, feel free to start submitting proposals for jobs that you find to suit your skills and experience. Please, check out these threads Getting Started on Upwork and Hiring Headquarters. There you’ll find some excellent articles and learn more about Upwork.
Once your profile is approved, when you log into Upwork, you will see a notification on the first page (Find Work) that will say you are now a part of Upwork. Currently, you will see a message that states your profile is still under review.
I hope this helps!