Searching for a "Mega" link for The Cursed Child is more likely to give your computer a virus than give you a magical evening. Between the ethical concerns of supporting theater and the technical risks of pirated files, the official script remains the gold standard for fans who can't see it live.
: Many fans initially believed the leaked plots—which included time-traveling to save Cedric Diggory and the existence of Voldemort’s daughter, Delphi—were "too stupid to be real". Character Assassination