Unarchiving a story on Instagram is the process of restoring a previously hidden story to your profile. This can be useful if you decide you want to share the story again, or if you simply want to have it available for your own reference.
To unarchive a story, open the Instagram app and tap on the profile icon in the bottom right corner. Then, tap on the “Archive” icon in the top right corner. This will open a list of all of your archived stories. Find the story you want to unarchive and tap on it. Then, tap on the “Unarchive” button in the bottom right corner.