Stray - How To Get Into the Nightclub

Contrary to what you would expect, you probably won’t go inside the club the first time you see it in Stray. You can approach and converse with a few characters, but you cannot enter. Instead, carry on with the plot until you receive a note instructing you to meet in the club. You bypass the usual entryway.

You must enter the side alleyway and jump on the trash cans to get access to the club. By finding your way onto the pipes and jumping a couple of times, you can climb up from here. After reaching the top, you can enter through a window. You won’t be able to enter this window if you arrive earlier in the narrative. The club is now yours.

Source: https://www.gfinityesports.com/guides/stray-get-into-nightclub/