The Sims 4 has a limited amount of cheats, and the most important is unlimited money.

Sims 4: Limited Edition PC Cheats:
Press [Ctrl] + [Shift] + C to display the console window. Then, enter one of the following codes to activate the corresponding cheat function.
List console commands - help
+1,000 Simoleons - kaching or rosebud
+50,000 Simoleons - motherlode
Set household funds - money
Toggle fullscreen mode - fullscreen
Free neighborhood real estate;
activate at neighborhood or world screen - freerealestate on
Disable free neighborhood real estate - freerealestate off
Toggle frame rate display - FPS
Toggle headline graphics - headlineeffects
Reset Sim - Resetsim
Toggle dying - Death.toggle
Enable Testing mode - testingcheats true
Disable Testing mode - testingcheats false
Exit the game - quit