Hi @ShelHealth ,
May our Boost sale app will help you show freeshipping bar on your site and set code for that too.
AVADA Boost Sales is a one-stop solution that is specially designed to skyrocket your sales with countdown timer, trust badges, sales pop-up, sales boost and many more
You can check our app here: https://apps.shopify.com/avada-boost-sales
It is totally free and help you much more.
Hope it will help you!