About App Store Connection

How can I overcome this?
The situation is: I cannot to update Xcode cause App Store doesn’t open relevant way. Below is shown how does it look when I open App Store App:

Have you tried restarting your Mac? Seems odd that the App Store does not work.

I have restarted it many times this day and even turned of then on, but nothing changed with the App Store.

What build year is your Mac and what version of macOS are you running?

I dunno what’s a built year, macOS version- macOS Catalina 10.15.7.
//I bought it in 2018 29th December.