Hey, thats amazing! Very Good!
Did you work on that file here: yacy_search_server/es.lng at master · yacy/yacy_search_server · GitHub
?
Because then the easiest way to provide your work would be a pull request.
This is easy even if you are new to git/github: just click on the pencil “Fork and Edit” to get your own copy of YaCy in github where you can paste in your work in the browser window.
This becomes a pull request and I can pull it. This way you become a proper YaCy developer and your contribution is part of the YaCy development history.
Same with a portugese translation; please check the german translation yacy_search_server/de.lng at master · yacy/yacy_search_server · GitHub which should be the most complete translation as a template. If you would like to start like that, I can make a copy.