Hello,
Thanks for using our theme.
Sorry, but your request is a bit unclear for me. Could you describe the desired result in more detail? Do you mean Sizing guide?
If you do not like the current displaying – https://gyazo.com/9c0d40970e08a466f4c94d009cd628b8 , create a static block with the desired content using Elementor (Elementor > Settings > Post Types > static blocks), then show the block on single product page via Custom HTML element, for example – https://prnt.sc/x43d1n
Regards