The short answer in 2021 is no they wont know if you took a screenshot.
Does Instagram notify when you screenshot a story? - Dexerto
23/09/2022 — Can you see if someone screenshotted your Instagram story? ... No Instagram currently will not notify you if your story has been screenshotted.
Does Instagram Notify When You Screenshot? - Business Insider
24/08/2022 — Whether youre screenshotting (or screen recording) a story a post or even a reel Instagram does not notify the other user that you have ...
Can Someone Tell If You Screenshot a Story or Post in Instagram?
There are two ways that Instagram notifies someone that you have screenshotted their photo. Neither is an actual notification; no one will receive a popup ...
Does Instagram Notify When you Screenshot a Story or Post?
Can people see if you screenshot their instagram story? No Instagram doesnt notify users when you screenshot their story or post. However Instagram sends ...
Does Instagram tell people when youve screenshotted their photo?
07/06/2022 — Currently Instagram hasnt introduced a function for Stories or even for the grid posts so you wont know when someone has saved your photos.
Does Instagram notify when you take a screenshot? - Android Authority
12/07/2022 — No Instagram does not notify when you take a screenshot of a story. However if you take a screenshot of a disappearing image on an Instagram ...
See Who Screenshotted Your Instagram Story Can You in 2022?
20/01/2022 — After you block someone from seeing your story they wont be able to see whats in it or take a screenshot. However their friends can still ...
Instagram Story Screenshot Notification 2022 | Do People Know? - Glorify
In short the answer is no. If you take a screenshot the person who posted it will not be alerted through the Instagram story screenshot notification 2022.