How can a person with an experience of 2 years target admission in ISB Hyderabad? What is the required GMAT GRE score? Is it a better choice than writing CAT?

ISB Hyderabad does not consider CAT scores for admissions. It only accepts GMAT or GRE scores. It is recommended to opt for GMAT as it is more widely accepted by business schools and is designed for such programs. However, keep in mind that the Quant section of the GMAT is harder than that of the GRE, so it may pose a challenge for those with weaker quant aptitude. Additionally, many big firms, MBBs, or Fortune 500 companies may ask for GMAT scores as part of your resume, so it may be beneficial to take the test now rather than during the MBA program. 

In terms of work experience, it is important to have a good amount of it, but it is also important to demonstrate how that experience has helped you learn and grow. Make sure to understand the qualitative aspect of your work experience before writing the application essays.