There are two great options to look for:
Thanks for help!
Sticky Cart for WooCommerce - WooCommerce Marketplace
Use Sticky Cart for WooCommerce to give your shoppers a Smart Cart Feature — let store visitors buy from any page on your site with a Sticky Cart that appears as they scroll, and boost your sales and conversions.
woocommerce.com
WooCommerce Sticky Add To Cart Pro - MagniGenie
www.magnigenie.com
Thanks for help!