It doesn't help whatsoever with COVID-19. If anything, it makes things worse. And not just for the malaria sufferers who can't get the drug thanks to Rudy 'Moscow's Mayor' Giuliani and Traitor Trump:
https://www.cnn.com/2020/04/21/health/hydroxychloroquine-veterans-study/index.html
https://www.cnn.com/2020/04/21/health/hydroxychloroquine-veterans-study/index.html