﴿ أَلَمْ يَجِدْكَ يَتِيمًۭا فَـَٔاوَىٰ ﴾

“Has He not found thee an orphan, and given thee shelter?”

Did He not find you an orphan an interrogative meant as an affirmative in other words He did indeed find you an orphan having lost your father before you were born or shortly thereafter and shelter you? by having your uncle Abū Tālib embrace you as part of his household.