Your profile says you have good experience. But, You don't know how to create a profile on UpWork.
These courses teach you, how to create a profile?, how to stay safe on Upwork?, and etc.
Scammers target freshers and post jobs where they get more proposals. For example Data Entry Jobs, Typing Jobs etc. Be careful if you do this kind of jobs. Here are some important links about the scam.
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I hope this message helps you.