Yes, your profile was accepted and you have already selected a membership plan, feel free to start bidding on projects.
It looks like your application to join Upwork has already been approved. Welcome to Upwork!
I highly recommend that you read up on the freelancer resources we have compiled, for great tips and insights on how you can work successfully on the platform. Please also pay attention to the Safety First! section of the resources, and these tips for avoiding questionable jobs for more information about working safely through Upwork.
I hope these helps you get started on Upwork. Good luck!