Translation:How many universities and young men are in Philadelphia?
Why does she say "soynt" instead of "sunt"? Is it a mispronunciation, or am I forgetting some rule of Latin?
It's definitely /sʊnt/; this person's speech is a bit exaggerated and unclear.
Anglophone accent. Check this channel for crystal clear pronunciation: https://www.youtube.com/channel/UCRllohBcHec7YUgW6HfltLA
"Brotherly love," derived from the Ancient Greek terms φίλος phílos (beloved, dear) and ἀδελφός adelphós (brother, brotherly).