HSV-Color-Picker | simple OpenCV script | Computer Vision library

I am trying detect few colors in python opencv. For this I need to define the low and high hsv values so that the code can read it and detect colors. Now the issue I am facing is how do I get the high and low hsv colors. I am referring to below image

I need to detect this jacket and thus need to input its high and low hsv. For this I got a reference to this code which allows to select any part of image and will output the high and low hsv values for it. But as far as I know, hsv value cannot be larger than 100 but this code and most of the other codes online gives hsv values which are greater than 100, and this is very I am getting confused as to how these values can be greater than 100.

Can anyone please explain how can we get the values of low and high hsv values