Hello,
Your problem is not clear. First of all, please view this video, perhaps it would be helpful https://www.youtube.com/watch?v=D3NsDdMzsls&list=PLMw6W4rAaOgKKv0oexGHzpWBg1imvrval&index=3
We suggest you to keep translated files in wp-content/languages/themes/woodmart-pt_PT.po folder.
If you have done everything as per video and problem remains, update woodmart/languages/woodmart.pot file You need to get it from the latest update and then click on “Sync” button.
Best Regards