I have tried many time but i have not able to do that, Please help me.
It's very simple with VBA. To remove gridlines from your sheet, set the DisplayGridlines property of the Window Object to False.
Check out this article for more information: https://www.automationfever.com/vba/vba_remove_gridlines.php
You can learn how to remove gridlines from your sheet in VBA by watching the video below : https://www.youtube.com/watch?v=AP6Y9WMwQUU