I understand your concern and will assist you to resolve this issue.

This issue occurs due to the corrupted Windows store components or due to the corrupted Windows system files on your system.    I suggest you sign out from the current user account, restart the PC and log in to either administrator account or the Microsoft account to check if that helps.   Also, I suggest you install any pending updates on the PC to check if that helps.  Updates are additions to software that can help prevent or fix problems, improve how your computer works, or enhance your computing experience.    The Modern app troubleshooter can automatically identify and fix some problems with apps and the Store. Try to run the Windows Store App troubleshooter and the steps are mentioned below:

 1. Type ‘Troubleshooting’ in the search bar and press Enter.
 2. Click on ‘View all’ on the left panel of the ‘Troubleshooting’ window.
 3. Click on the ‘Windows store app’ and follow on the screen instruction.