I do have my dad’d Birth certificate , my birth certificate. Would that be enough? Or do I need something else? I have a question, in the question about the dates my father reside in the United States. Should I just put that he has always reside in hnited States or do I need the dates of the times he has been out of United States for work /pleasure?
I'm trying to figure out how you would have gotten US citizenship. Your father's physical presence in the US only matter if you are claiming to have been a US citizen from birth, because your US citizen parents met the conditions for
transmitting US citizenship to a child born abroad at the time of your birth. If you are claiming citizenship based on that, you would need evidence your US citizen parent(s) meet the requirement for amount of physical presence in the US before your birth. However, if you were a US citizen from birth, then it would have been unlikely for them to have given you a green card.
If you weren't a US citizen from birth, the other way you could have gotten US citizenship automatically was as a permanent resident under 18 living in the US with a US citizen parent. Specifically, if at any time after February 27, 2001, you were a US permanent resident, under 18, living in the US with a US citizen parent (doesn't matter if it was before or after you became a permanent resident), you automatically became a citizen at that time. Before 2001, if both of your parents naturalized (or if your parents were divorced and the parent having sole custody naturalized, or one parent died and the other one naturalized) after you became a permanent resident and while you were under 18, or if one parent was a citizen when you were born and the other parent naturalized after you became a permanent resident while you were under 18, you automatically became a citizen. If you are claiming citizenship based on one of those cases, your father's physical presence in the US doesn't matter; rather, you need to show that your father was a citizen at a certain point in time when you were under 18 (e.g. a passport valid at that time or a Certificate of Naturalization before that time or a birth certificate showing birth in the US, etc.), and your green card or other evidence showing that you were a permanent resident at that time, and your birth certificate and parents' marriage certificate showing that you were living in their legal and physical custody.