Hi there!
Thank you for contacting us. I’ll be happy to help you.
how do i edit the event list page in a child theme?
You’ll need to use the template override explained at https://theeventscalendar.com/knowledgebase/k/customizing-template-files-2/.
All the files for the list view are available at /the-events-calendar/src/views/v2/list, so you can copy the files you need to customize to your theme folder (following the instructions on each file) and change them.
The easiest way to identify which file you need to change is by inspecting each element on the front end and searching for the CSS classes on the list folder.
and how can I change the meta title of the page itself?
Following this article, you can change the meta title for calendar views at https://theeventscalendar.com/knowledgebase/k/changing-the-browser-title-for-calendar-views/.