Just to confirm that Upwork does not work like this. Please read this Help Article to find out how to Find Work and how to submit proposals on jobs that you find to suit your skills and experience.
Pay attention to the Safety First! section, and these tips for avoiding questionable jobs, as these will help you work safely on Upwork.
Afterwards, if you have any questions feel free to follow up in the Community and we'll gladly help you with them.