Problem:
I can't translate the checkbox label in a form created with Contact Form 7
Solution:
The label is added as a shortcode attribute and you can translate it in the advanced translation editor with the following steps:
1. Edit the contact form in the default language
2. Click the pencil icon to edit the translation https://prnt.sc/UHIloXlitVD0
3. Use the search field to find the label text