Re: discover universty is not working

@HildaD20  You're running the Legacy Edition of Sims 4, which doesn't support any packs released after October 2019.  Discover University is the first pack not supported, so while you can install it, the data won't load.  Please see this thread for more information about the Legacy Edition in macOS:

https://answers.ea.com/t5/Technical-Issues-Mac/The-Sims-4-Mac-Legacy-Edition-thread/td-p/8420037

If you have more questions about it, including whether your Mac can run the standard version of Sims 4 instead, please post in that thread.