I want to add a section of text right above my policy list on the checkout page. (see picture for location) I am not sure where or how I can add this information. I tried to add it through the checkout & system language section but it does not show up correctly.
Thanks in advance!
Unless you're on the Shopify Plus plan you can't edit the checkout page. If you're indeed working on a Plus store, you can achieve this by editing the checkout.liquid file.
I recommend reading the documentation thoroughly since mistakes in this particular file can have meaningful negative impacts.