My mother is a American citizen I am trying to obtain my records for dual citizenship as a American born abroad where do I find the statutes to do so?

All of my family lives in the USA and I would like to see them but I am being prevented from doing so as the forms for my birth were never filed as a American born abroad. I presently live in Alberta Canada but have always considered myself American I grew up for the first part of my life living between Montana and Alberta but have had difficulties in returning to the USA since I turned 18 and committed a misdemeanor in Canada I did as a child attend school in Montana at Whitefish Middle school but I only lived there for a year as I was bounced between my father and mother in Canada and the USA . Since I have been an adult I have been alienated from my mother and all my family being refused entry into the USA for a misdemeanor. My mother never gave up her citizenship but did not know that she could apply for my birth certificate as a American born abroad so my records where never filed as a child. My mother and all my relatives that I know live in Montana.