Hello,
You need to use the Custom Layout Builder for a Product Archive.
Please navigate to WoodMart >> Layouts >> Product Archives and create the new layout from there for the particular category page, you can remove the sidebar element from there, save changes, and then apply that layout to the particular product category, it should work for you.
https://postimg.cc/T50xPdH7
Please refer to our theme documentation here: https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/
Best Regards,