If "amr" meant something else (e.g., a fan abbreviation or a specific analysis), let me know and I can narrow it down further. Otherwise, this covers the key useful facts about the episode.
CBS was fined $272,000 for using real Emergency Alert System (EAS) tones in this episode. Where to Watch A Mother, a Child, and a Blue Man's Backside young sheldon s01e18 amr
Sheldon becomes fascinated with a local Mary, Queen of Scots museum and its curator, who becomes a love interest. Meanwhile, Missy tries to become popular by associating with a new girl at school. If "amr" meant something else (e