Hi Mrunal hope you are doing well. With regards to your question I want to mention that you are not eligible for SBI PO exam. As you can see from official notification where it is mentioned in the eligibility criteria

Minimum: 21 years Maximum: 30 years, i.e., A candidate must have been born not earlier than 02.04.1990 and no later than 01.04.2000

which means candidates born after April are ineligible to take the exam. You have to wait for another year in order to take the exam. Hope it helps

Thanking you

Yours sincerely

Somenath Chattopadhyay