Is it really true? Coz the social video app I am using called Make It gives my INR 13 /- per referral (if referred register). Let me know the sources from where I can make 20$, it would be great help.
Till then you can check out this app https://play.google.com/store/apps/details?id=tech.terrevive.videoediting
There's a free app on Play Store which I think shares 60 legit ways to make money online. I am not sure what kind of online earning methods you're looking for but I think reading the info within the app would provide you with lots of ideas.
Here's the link - https://play.google.com/store/apps/details?id=com.andromo.dev430081.app392812