Hi JavohirOdilbekov,
I'm Paul, I hope I can help you with your concern.
A. Try this to fix the keyboard issue.
>> Press WIN+R keys to launch RUN dialog box.
>> Copy/paste the command below press Enter key:
C:\Windows\System32\ctfmon.exe
>> See if the keyboard works properly.
B. Microsoft Store issue.
- Re-register Windows Store App.
>> Click Windows PowerShell (Admin)
>> Copy the command below then hit Enter:
Get-AppXPackage *WindowsStore* -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
I hope this helps. Feel free to ask back any questions and keep me posted.