You typically won't be able to tell if someone screenshots your story. There aren't common ways for this kind of notification. But some apps or services might have special settings or options related to it that you'd have to look for specifically.
In most cases, you can't directly know if someone screenshots your story. There's no built-in feature for that.
Generally, it's not possible to be notified if someone takes a screenshot of your story. The technology and platforms usually don't provide such information. However, if the platform has specific screenshot-detection software or features, then maybe, but that's quite rare.