@aagha51 There isn’t a setting that can be used to change that label.
Generally speaking, to change strings of text within any plugin, I’d recommend using a translation plugin. These plugins are generally used to change text from one language to another, but they can also be used to edit text within the same language.
I know it may sound strange to “translate” your own language, but it works.
I’d recommend Loco Translate, which I have used it successfully for this purpose. Here’s what you’ll need to do once you’ve installed and activated the plugin:
1. From the administration sidebar, click on “Loco translate” option and click on “Plugins”.
2. Select the WooCommerce plugin from the list.
3. Choose the option “New Language”.
4. Select the current language for your site (if you’re using an English version of WordPress, use English, etc.)
5. Find the strings that you want to change with the filter box.
6. In the second box on the left, add your replacement texts.
7. Save your changes and reload your site.
Here’s a video about it that outlines how it is used: https://www.youtube.com/watch?v=ZUPhsoUm-QE
I hope that helps!