Genting is targeting to open the park in 2Q21 but no specific date mentioned. Hopefully the park can be opened to public as soon as possible. Can’t say if they will delay the opening again or not since the opening has been delayed twice.
You may refer to this article to get more informations: https://www.theedgemarkets.com/article/genting-skyworlds-outdoor-theme-park-open-2q21-featuring-20th-century-fox-attractions