I amm trying to update Xcode on my MacBook Air (newest OS).
Whenever I try to start the update it doesn't look like its getting downloaded.
The process is not going on and sticking at the beginning, see screenshot:
What should I do? I already restarted my MacBook several times with no luck.
Maybe I have to download the Xcode at the Apple Developers page directly?
But I need to uninstall Xcode first? How does the installation work with the manually downloaded Xcode zip file?
Or should I just wait till the download process is going on at the App Store?

Xcode is fairly large - probably the download is in progress but will take quiet a long time?
You can also try to update Xcode from the command line by running
This should perform all pending updates, including Xcode, provided MacOS is already updated to the latest version.