Hi,
It’s possible to change any static strings (if it’s not page content that can be changed in WordPress UI or editor) using the Loco Translate plugin How to translate HivePress - HivePress Help Center
Please note that these button URLs are not public (they require logging in), so search engines and AI will not index them anyway. If you still want to customize these URLs for visitors, it’s possible with a code snippet like this one Change URL of "List a Service" button (header) - #5 by olivier.amici The snippet is the same for the Post a Request button, just with the “request” word in the code snippet instead of “listing”.
P.S. Please consider renewing support for the ExpertHive theme if you still need assistance Renew Support | HivePress