This is the 4194th most frequent Arabic word.
فكيف
"فكيف" means "so how" or "then how."
This is used in a question to inquire about someone's state or condition.
فكيف الحال معك؟
So, how are you doing?
Here, it introduces a rhetorical question expressing surprise or challenge.
أنا كنت مشغولاً طوال اليوم، فكيف أجد وقتاً للراحة؟
I have been busy all day, so how do I find time to rest?
It is used here to express incredulity or to highlight a contradictory action.