I ordered Sims 4, the University one, which was 40.
I followed the directions and downloaded Origin and went to the MyGames section. It keeps saying there's nothing there but I have the email conformation that I have it.
@Gggg7755 Do you own the Sims 4 base game too? If not, you can't play Discover University, which is an add-on pack. In case you need it, the base game is $5 on Origin, at least until the sale ends in about 14 hours (until 10 am Pacific time/1800 UTC).
If you do own the base game already, try clearing Origin's cache (Windows) or running the Origin reset tool (macOS) to force Origin to refresh its data.