Getting My Share in Land and Shop Constructed on common names ancestral land

I am 68 yrs female & stays in Palghar City. There is 8 acres land near MIDC at Boisar area of my Grandfather (Mom side) as ancestral land. My Grandfather had 3 sons(A B C) & 2 daughters (D E); out of which only 1 son (my middle uncle B) is alive as of now. My mother (D) has 2 sons & 2 daughters including me. My mother died in 2000. To my best knowledge, Grandfather & Mother have not made any will / Hakka-Sodpatra. My passed away elder uncle (A) has 2 sons & 1 daughter alive with wife died. Passed youngest Uncle (C) has wife alive with 2 sons. My passed away aunty (E) has 2 sons and 2 daughters alive. All heirs names are there on Land 7/12 that is of wife & sons / daughters as applicable of died person. All person's names on land 7/12 who alive all. My uncle (B) has wife, 2 sons and 1 daughter. Now uncle (B) with my two brothers and with uncles's brother (A & C) heirs have planned and constructed total 19 shops on roadside of land without my /my sister's awareness. I came to know that they have also rented some shops. When we ask they are rotating the matters and pressurize for giving NOC. Ee don't know for what proportion they have built these shops and what type of permissions from authority they have taken ? I doubt whether my Aunty's(E) 4 children have even idea about this as my aunty (E) who is already died name on the land 7/12 but not of her 4 children after her death. There is less chance of mutual agreement to give equal share to the names on land 7/12. Rather I say uncle don't want to give share to female heirs. I want my share in shops as well as in land in my living and don't want to face any issues in future to my sons as both are away for job. Pls guide I can proceed in this matter ?