If you look at learning to Scalp - It has three components to it - Knowledge, Skills and Attitude. While Knowledge is something which is relatively easy to pick up, and may not take much time, its the other two components that take more time. Like any other skill, practice is an important component of it. You need to trade for a long period of time to gain expertise.
One of the reasons why "Scalping" experience is preferred in several Prop Desks, Arcades and Trading Desks, is because Scalping is one way of accelerating the learning cycle by trading more. Yes it may seem counter intuitive to some, but think about it. The act of identifying levels and punching in orders, multiple orders sometimes, modifying them, and doing all this in an emotionally charged environment, not easy. Scalping helps you desensitize yourself from these emotional highs and lows as you would get to expose yourself to it several times in a day. This is the point where practice starts influencing your personality and attitude.
I don't know of any successful trader who has not been though this cycle.
But more importantly one has to structure ones practice. This video helps us understand the idea of deliberate practice better. Do watch it till the end, almost everything shared in the video is applicable to the world of trading and scalping.