I don't think there's a direct way to know for sure. It's kind of hard to tell if someone is doing that without any specific indicators or notifications.
Generally, no. There's no straightforward way to be informed if someone is screen recording your story. It's something that can be done without you being immediately aware.
In most cases, you can't easily know. There aren't built-in features or alerts to let you know if someone is screen recording your story. But sometimes, if the person tells you or you notice unusual activity related to your story, you might suspect it.