C&C side menu with build options not visible

It generally just means your graphics card does not meet minimum requirements.

https://steamcommunity.com/app/1213210/discussions/0/2290590708532585930/?ctp=2#c2290590708536049954

Though, specifically, the issue appears to be DirectX 11 compatibility:

https://steamcommunity.com/app/1213210/discussions/0/2290590708532585930/?ctp=3#c2442587820561950049

Note that some graphics cards claim to support DirectX 11, but don't really support it fully. Make sure you have a card that properly, completely supports DirectX 11.

If your computer has an on-board graphics card, check your control panel and make sure the C&C Remaster isn't using that one instead of your actual high performance card.

https://steamcommunity.com/app/1213210/discussions/0/2290590708532585930/?ctp=2#c2290590708536734321