How to create archive page for taxonomy terms within custom post type

There is an example in the WP Codex which should work for you:

Try the following naming convention for your taxonomy term archive template:

taxonomy-{taxonomy}-{term}.php

So, let’s say you have a CPT named “Projects,” a taxonomy named “Maintenance,” and a term within the taxonomy named “Professional.” Then your naming convention would be:

taxonomy-maintenance-professional.php