your host name / bitrix/admin/fileman_file_edit.php?lang=en&site=s1&path=%2Fbitrix%2Fcomponents%2Fbitrix%2Fcrm.company.show%2Ftemplates%2F.default%2Flang%2Fen%2Ftemplate.php&full_src=Y
you can changes in this file for your tab label name and save it. I am find out it from search option.
solved Bitrix24 CRM fields and sections