I found the answer
1. Edit -- > Preferences -- > Viewport
2. Go to "Mouse wheel setting near the bottom
3. Set " Mouse Wheel " to " Zoom In "
4. ( IMPORTANT ) Make sure the bottom 3 setting that say " Wheel Zoom ..... Speed " are set to 1 , for me it was set to 0 so change that to 1 .
5. Now you will be able to scroll , by chance if the zoom is not going the direction u want it refer to this other post
https://3dcoat.com/forum/index.php?/topic/19074-how-to-invert-zoom-axis-mouse/&do=findComment&comment=132683