How Do I access templates in my content folder?

I am so new to using WP - the answer to this may seem obvious.
I want to modify a template in a theme that I bought.
I found the path to the template is this:
content/blocks/projects/template4

My question is - how do I access the code for that template to modify it?
I got that path from finding this code in the functions.php file:
case 'projects':
get_template_part('content/blocks/projects/template4');