Is 21 mark in VARC a good mark . My percentiles are fluctuating every time I.e, sometimes with 16 marks I get 80%le and some other times with 21 marks I get around 50%le. Which would be a better criteria to look at my improvement . Kindly give some suggestions

Percentile is the better criterion to look for, when with fewer marks you get a high percentile in VARC this means that the particular VARC section was on the tougher side, hence everyone else would have performed significantly lower than their usual. For improvement look at what are the questions that you are getting wrong, see the solutions and try to learn from those solutions, after doing that regularly, you will automatically see a jump in your performance.