Hello,
Apperance > Widgets > edit content of the Shop sidebar area.
Filter products by price widget takes price range automatically based on the min and max price of existing products.
Theme Options > WooCommerce > Shop > Shop page layout > Shop Page Banner Content > Text tab > you will find a shortcode of static block. Go to Dasboard > Elementor >enable static blocks, then go to Dashboard > Static blocks > edit “Banner on Shop page” block using Elementor.
Regards