Hi Narendran j,
You can use this widget from AppStore https://appstore.home.mendix.com/link/app/48910/Mendix/Progress-bar.
Or else you can use custom JS or Jquery to achieve this loader.
Hope it helps!
Regards,
Yasar
There is a widget for that: https://appstore.home.mendix.com/link/app/48910/Mendix/Progress-bar
Regards,
Ronald