Wix Stores have their own support pages that you can read
https://support.wix.com/en/wix-stores/setting-up-your-store
https://support.wix.com/en/article/adding-a-shopping-cart-icon-in-wix-stores
https://support.wix.com/en/article/customizing-your-wix-stores-mini-cart-and-shopping-cart-icon
Otherwise, you are better suited contacting Wix Support themselves.
https://support.wix.com/en/article/contacting-wix-support