Im 5'7 feet. How more feet can I grow? Im soon 20 years old. How shall I do to grow taller?

Nothing. You're not going to get significantly taller.

You are probably the height you're going to be. I'm also 5'7" and happy with it. I do have a couple of friends over 6'6" and worked with a couple of guys that were 6"10"...believe me, you and I are way better off! Almost ALL of the clothes of the 6'10" guys are custom made; shoes are custom made, can't fit in most regular cars, etc. Would I have liked to have been taller, yeah, 5'10" would have been nice, but it wasn't in the cards. Be happy with who you are.

You aren't going to grow any more.

You are probably not going to get any taller.

Although people keep growing till age 25, you most likely won’t grow. Mostpeople reach their height by age 16, and don’t grow much after. You can increase your chances of growing by living a healthier lifestyle and just exercising.

maybe a 1/4-1/2"

If you get a lot of exercise, you could grow. It will likely take a lot of effort. Like basic training sort of effort. Men tend to grow into their 20s. The human brain is not fully mature until about 30. There is room to grow. It won't be as dramatic as puberty. But, you might get an inch or two.