Re: Style Members Section through Child Theme?
This link should help you get your child theme ready to go – https://codex.buddypress.org/theme-development/building-a-buddypress-child-theme/
It sounds like the child theme you created might not be activated yet. Once you activate the theme you should see the changes straight away when you modify the child theme.
On a related note, I’d highly recommend using the stylesheet of your custom child theme wherever possible to manipulate the presentation of your content. If you wanted to change the style of the members directory, start your selector with body.directory.members like this:
`
body.directory.members a { color: #000; }
`
In the example above, I’ve just chained together the two body classes (directory and members) that are used in the default BP theme when viewing the members directory.
Source: Class selectors