I want to edit the coments section and I don't know how. Please, help me! THanks

The parameters (antspam etc) for this section are located in the extension's settings.
The comment count can be disabled/ enabled from the category settings.

To edit the template and locate the files you need to change please read this post:
getk2.org/documentation/tutorials/174-templating-with-k2-and-the-concepts-of-sub-templates