"I am a queen" asserts the speaker's self-confidence and self-assurance. It implies that they see themselves as regal, strong, and powerful, deserving of respect and admiration.
"Whether I have a king or not" emphasizes that the speaker's worth is not defined by their relationship status or the presence of a romantic partner. They are complete and whole on their own, and their identity as a queen stands independently of any relationship.
The quote promotes the idea of self-love and self-sufficiency, encouraging individuals to recognize and appreciate their own value and worthiness. It sends a message of empowerment, reminding people that they can be strong, confident, and regal regardless of their relationship status.