Hello,

Do you want to remove the sidebar or content of the sidebar?

If you want to remove the content of the sidebar, navigate to the Appearance > Widgets > remove all from Shop page widget area.

If you want to remove the sidebar, navigate to the Theme settings > Shop > Titles and Sidebars, you will find the option to remove.

Enter the category and clean the description field to remove information under the product grid.

Best Regards