Hello,
Navigate to Dashboard > WoodMart > Header Builder > there edit your current Header Layout > in that you can edit the Search element and configure the available options related to it:
Secondly, you can go to Dashboard > Theme Settings > General > Search > there you can find options related to Search.
If you want to change the text you need to install and use the Loco Translate plugin to translate the string.
You can watch our detailed videos on how to translate string using loco translate:
https://www.youtube.com/watch?v=D3NsDdMzsls
Best Regards.