Scholarship /
Statement of purpose for studying public policy and taxation [2]
You've made lots of spelling mistakes. Use a word processor like MS Word to avoid them.
I reshaped your first paragraph with a few tweaks, although it still doesn't make much sense to me.
"I was born in a small village in the Southern part of Pakistan. I got my early education from Cadet College Petaro, one of the most prestigious institute of our country. Thereafter I did my Bachelors in Law which made me realize that for the sake of social justice much has been done constitutionally. On the other hand nothing on concrete basis has ever been done by the policy makers because of lack of knowledge of Policy making. The economic policies were tabulated on an emergency basis giving high handedness to the ruling class and license for extortion of money from the business class in the form of Revenues (Taxes)."I don't know whether my changes kept the meaning similar to the one you wanted to convey. If not, you can modify the sentences yourself. However, I want you to note a few points.
First, try and keep your sentences short, so that your meaning is clear.
Second, observe the places where I replaced commas with full stops. Whenever you feel that a part of a sentence is making sense by itself, put a full stop at the end of it (there are places where you need to put semi colons, but for the time being follow this rule).
Finally, I didn't understand your usage of the term "business class." Do you mean working class or middle class?
Anyway, I am not that conversant with financial jargon to comment much on them. Nevertheless, I like the way you listed your objectives for pursuing the Masters programme. It would be better if you can shorten the essay. There is too much detail in the 3rd, 4th and 5th paragraphs. Maybe, you can condense them by removing some of the less important matter.
You also need to write a few lines about the university you want to attend. Why do you think that particular university's course can help you realise your goals?