Re: how to get my saved world?
@Lissa_the_cool I've moved your post to the Sims 4 PC tech section.
Your saves, builds, created households, and other content are stored in your Sims 4 game folder in Documents\Electronic Arts. Hopefully you have a backup of this folder somewhere. If so, you just need to transfer the Saves and Tray folders from the old game folder to the new one.
This is a complete list of everything you'll find in your game folder:
https://sims4.crinrict.com/eng/2014/09/user-files-explained/