What is most important to learn before being an Architect?

Ive seen many advanced malls, i wished to know whether or not architects do it or city planners. Additionally I wished to be an Architect, however i simply can't discover precisely what to be taught or the place to start in being an Architect.

Second query could be, when designing a mall like this ☝️ How have you learnt the correct supplies for such a posh construction