Due to the ongoing global pandemic, Universal Studios Hollywood has decided to cancel Halloween Horror Nights 2020. This is their official statement:
Universal Studios Hollywood and Universal Orlando Resort have made the difficult decision to not hold Halloween Horror Nights events this year. Universal Studios Hollywood continues to face ongoing business restrictions and uncertainty around its opening timeframe. Universal Orlando Resort will be focusing exclusively on operating its theme parks for daytime guests, using the enhanced health and safety procedures already in place.
We know this decision will disappoint our fans and guests. We are disappointed, too. But we look forward to creating an amazing event in 2021.