@bhuvanbhatt bro, make sure transparency is enabled.
Go to settings --> Personalization --> Colors --> Transparency effects.
If your graphics doesn't supports transparency effects then you'll not see blur effect.
You can also try to enable it from Group policy editor (Pro and enterprise).
Run Gpedit.msc and go to "Computer Configuration\Administrative Templates\System\Logon"
Find "Show clear logon background" and set it to "not configured"
Restart your PC
Settings top bar is disabled by default. It was only available for insider builds. But, if you want you can enable it by using Mach2
riverar/mach2