I assume you mean if you have a taxonomy under WooComm, you are saying that you have a product post type with a new taxonomy of Brand, right? And then each term in that taxonomy (Brand A, Brand B, Brand C) has a field that has a shipping time associated with it. And that you have found some way (there are a few methods) to limit each product to a single brand term. Yes?
Then I am not sure why you would want to copy this field elsewhere – would you not just use it in the original location? (Having the same data in 2 places just invites it to be wrong somewhere.) You can pull out the information using this:
https://www.advancedcustomfields.com/resources/adding-fields-taxonomy-term/
If you really want it in 2 places, you can also use that method to pull out the taxonomy term field value and stuff it into an update_field on the acf/save_post hook.
https://www.advancedcustomfields.com/resources/acf-save_post/
See the “applied after save” section and then
https://www.advancedcustomfields.com/resources/update_field/
