I appreciate you for clarifying. I understand that you’re a previous NOOK user and would like to recover your NOOK app installation.
Check Your Microsoft Account: First, ensure that you are signed in with the same Microsoft account that you used previously to download the NOOK app. Sometimes, apps are associated with your account, and you might be able to find your previous installations there.
Library: If you had previously downloaded NOOK books or content, check your NOOK library. You might find the app listed there, and you can reinstall it from your library.
Microsoft Store History: Go to the Microsoft Store, click on your profile picture (top right corner), and select My Library. Look for the NOOK app in your purchase history or installed apps.
If none of the above options work, consider reaching out to Barnes & Noble customer support. They might be able to assist you in recovering your previous installation.