Forgergy document written with predated i.e 2015 and signature and document created in 2023

1.in 2014 my father want to sale the property of 3 acers to his brother and the agreement signed with advance amount of 2 lakh and mentioned in the document that if he didn't pay the remaining amount of money and get registered by dec 2024 then the agreement is cancelled. 2.when we both parties went to registar office to EC the land is on other person so we moved to court with civil case , that was ended in our favor by 2022. In this mean time of 2014 it's self my father told to my father's brother that take your advance or else pay the total amount of money so that after this total process i will register on your name, but he didn't take the advance and also he didn't pay the remaining amount. 3 because of as per 2014 sale agreement the agreement expires on 2014 December itself. My father's brother created forged document on around 2023 , he is moving to court the the land need to sell to me. 4. We want to forgergy case in police station and also want to request the year of the document created. Is there any option please advice sir/mam