When you ask a question like this you are going to get people who say it can't be done, because they're swing traders and thier way is best.
And you will get some people who say it can be done, because that is how they trade, and they make so much every day.
And probably some that say you should create an ea, and let it trade for you.
At the end of it who are you going to believe?
Can a human do scalping in 2020? Sure why not?
Dose that mean you can do scalping in 2020?
You could give it a go, but it probably takes a lot of practise and patience to learn the art. And then it probably takes a certain type of trader to scalp, one with lead in his/her belly and glass in their eye?