Your Provile has a hire now button so I think your profile is approved. I do not know how you can confirm from your side. May be upwork sends some notification etc.
Just to confirm that your application haven't been submitted for a review, if you`re ready please go to the bottom of the page and click on Review Application.
If you`re directed back to the same page please try clearing your cache and cookies or logging in with another browser. Thank you.
Looks like you successfully submitted your profile for the review. The review process takes 24 hours from the time you submitted your profile for review. Once the process is complete, you will receive an email and a notification to your Upwork account to update you about your profile approval status.