I want to add the word "listing" in the Add Details while submitting a listing

When a new vendor is added they must “add details” and then on saving it again goes to “add details” which is bascially add “listing” details… but many do ot understand the difference in these two forms. hence i want to add the word “listing” between add and details… while they submit the listing… how can i add that word

You may modify the text using Loco Translate in the LocoTranslate>Plugins>HivePress section. Check out the docs on How to change any static text - HivePress Help Center

However, keep in mind that the text will be changed everywhere on your website where the “Add Details” text is used.

If you want to change the text in one place only, try this snippet
Request page and List a service page - #3.