Reporting Bugs
CentOS Stream
CentOS Stream bugs are tracked in Red Hat Jira in the RHEL project.
Use the source package name for the component field. You can alternatively use the distribution component if you think it makes sense to do so, such as if the bug is regarding the distribution as a whole and not a specific package.
Website
This website is maintained in a git repository with its own issues tracker.
Special Interest Groups
CentOS Special Interest Groups have their own issue trackers.