In most situations, the other person won’t know that you’ve taken a screenshot of an image, post, or something else they’ve shared on Instagram. However, there is one specific scenario with Direct Messages where users will receive a screenshot notification.
Will I get a notification from Instagram if I take a screenshot of a story or post?
No, it doesn’t. Regular photo and video posts that you see in the home feed, on user profiles, or when you land on the Instagram Explore page are safe from screenshot notifications.
The same goes for screen recordings if you decide to record your device's screen while someone else's video is playing.
No, it doesn’t. Instagram tested a feature for a few months that allowed users to see who was taking screenshots of their stories, but that feature has since been discontinued.