Listing preprints on CV (undergrad)
If a publication is either published or accepted at a journal, list it under your &quot;normal&quot; publications - if you want, you can choose the caption &quot;Peer-reviewed publications&quot;.  If it is not published yet, write &quot;accepted at $JOURNAL&quot;, or similar.
If the paper is still under review, or otherwise not published at a peer-reviewed journal, but available as a preprint, list it under &quot;Preprints&quot;.