On most devices, for Instagram (IG) story screen recording, you can use the built - in screen recording feature. For example, on an iPhone, swipe down from the top right corner to access the Control Center and tap the screen recording button. Then open Instagram and record the story you want. Just make sure you follow Instagram's terms of use.
One important practice is to get permission if the story contains someone else's content. This is to avoid any copyright issues. Also, make sure your device has enough storage space before starting the recording.
Typically, you won't be able to view screen recording on a story. Different platforms have different rules and restrictions regarding this. Some might not support it at all for privacy or technical reasons.
In most cases, it's difficult to be directly detected. But some platforms or content providers might have measures in place to prevent or monitor unauthorized screen recording.