I hope you are well today and thank you for your question.
The “View All” on Menu string is translation ready but it not included in translation file gillion.pot which we will add ASAP. In the meanwhile you can do so by using attached updated gillion.pot file.
I could confirm other string translation issue on my test site therefore notified the theme developer about this so that it will be fixed.
The issue will be fixed ASAP.
In the meanwhile you can try resolving the issue by using the attached modified child theme of Gillion theme.