X-Men: Apocalypse, like any other film, left some scenes on the cutting room floor, and while they will be available on the Blu-ray and DVD releases eventually, we at least know a bit more about what the missing scene contains.
The mall scene as it is called by Screenwriter and Producer Simon Kinberg (via Collider) was more of a montage, but the final parts of it did end up making the theatrical cut.
"The mall sequence was probably the biggest scene that we cut out of the movie, um, and it was where they, right now in the finished film where they come out of watching Return of the Jedi, that was the culmination of the mall sequence. But it was just like a montage more than a sort of like sequence or narrative piece of the movie."
While most of the sequence isn't crucial to the plot and ultimately won't be missed, the Producer did reveal one sad casualty of the cut, and it involved Nightcrawler. He also addressed the Taylor Swift as Dazzler rumor.
"Taylor Swift was never Dazzler, that was just us going to a concert that was misconstrued, but um, what it did have that I miss desperately, and it will be on the DVD I'm sure, but it was a moment when Nightcrawler, there was a group of breakdancers in the mall, and Nightcrawler starts breakdancing with the breakdancers."
That is something that I would like to see.
X-Men: Apocalypse hits theaters on May 27th.