I created a polar spider graph and I would like to know if it is possible to set scale (min and max) for each categories.
I would like change the min and the max, ie for a category A I have values from 0 to 200 and for another category B from 0 to 1. Currently, category B, I do not see very well because the scale is 0 to 200.

This is implemented now as a polar parallel coordinates chart, will be available as of next maintenance release: http://jsfiddle.net/highcharts/dxq8hrd5/
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One solution could be that you gave up the data in percentages, then add a separate raw value that you can use in the tooltip, and possibly in data labels: https://jsfiddle.net/y7vLpj1f/
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If you have two sets showing the same metrics, you might be able to get what you are looking for by using multiple yAxes: http://jsfiddle.net/5v1c7ctw.