if we get the job on the basis of our master of computer science? And if yes then how much we earn ?
Not very much. As monitor said, you can expect to earn a lousy 8000 to 12000 USD per year on your first job, which is below the minimum wage in the US for burger flippers and Walmart greeters. When you have about five years of experience, that might go up to 24000 USD per year. You would earn three to five times as much in a Western European or English-speaking country.
Please give me some helpfull information.. thank you.
It would be much smarter to get a masters in petroleum, geological or biomedical engineering. Job prospects and earnings are much higher than IT.
Also, engineering schools in Poland are not much better than those in India, if at all. There is no compelling reason for you to study in Poland. If you want a quality education, try Western European countries or English-speaking countries. Otherwise, study at a good engineering school in India.
Ignore any marketing hype from Polish universities, especially private ones.