Hello,
Go to Theme options > WooCommerce > Single Product builder > check titles of elements and their content.
To be able to edit this – https://gyazo.com/efc96a6189a7ffffd7e1734185e30107 , go to Dashboard > Products > edit product or create a product from scratch as described in WooCommerce documentation https://woocommerce.com/document/managing-products/#adding-a-product
https://prnt.sc/jvIQ3h1pvhyE – go to Dashboard > Static blocks > edit “Custom Single Product sidebar – niche-market02” static block using Elementor.
https://prnt.sc/jkY0J8-sOsD8 – go to Appearance > Widgets > check the content of the Single product page sidebar.
Regards