Hi
To get it working on Windows 10 it might need some tweaking. Try right-clicking Simcity 4, select Properties > Compatibility and there select to run it as Windows XP SP3.
if that does not work please contact a Game Advisor to make sure you get a Digital Download version of the title:
2. Make sure you are logged in (top right corner) and select 'Help with Game'
3. Find the affected game
4. Select 'Contact Us' at the bottom right on the new page
5. Select your platform and then 'Next'
6. Select topic from the drop down menus, type in a short description of your issue and select 'Next'.
7. Select a contact option. Please note that available contact options do depend on your country settings and time of day
Good luck!