Hello, thank you for this question. In most of the BoldGrid Themes, there is no text displayed nearby the Social Media menu. In just a few themes, like Florentine, the text is encoded within the Theme Config file.
In the file:
boldgrid-florentine/inc/boldgrid-theme-framework-config/config.php
Down at the very bottom is a function called boldgrid_social_followme_text() that sets this text manually.
I understand that altering the Theme Config can be a complicated task if you’re not familiar with coding, so I’ve created a child theme you can use with the Portuguese “Siga-nos” string included for you:
Florentine Portuguese Child
If you have already added customizations to your website, like color palettes and fonts, that you would like to transfer to the child theme, I highly recommend this plugin:
https://wordpress.org/plugins/customizer-export-import/