Hi,
You have 2 ways for displaying delivery time.
1. Create the product page via Layout builder (Dashboard -> Layouts).
Here is our documentation on how to use Layout builder:
https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/
2. Or by using theme presets, please navigate to Theme Settings and create a theme preset as on the below screenshot.
Also, here is our documentation about Theme presets:
https://xtemos.com/docs-topic/theme-settings-presets/
The “Delivery time” tab can be edited via page builder for each product.
https://prnt.sc/WSur8zlkurkm
Best Regards.