Ok, Thank you so much. And what about macOS ? Regarding this is there any solution ?

Actually I have some restriction, I can not connect my device to network. So I was trying to install without any Internet connection in my device. Can you please tell me without network connection, if there is a way to overcome the problems and install them ?

Yes, I've tried installing Xcode 12 as well, but this also give error with notification "The archive Xcode_12.xx.xip" is damaged and can't be expanded".

Yes, I've tried installing Xcode 12 as well, but this also give error with notification "The archive Xcode_12.xx.xip" is damaged and can't be expanded.