have (got) to hand it to someone idiom
C2 不得不佩服（某人）
If you say you have (got) to hand it to someone you mean that they have been very successful or skilful.
I mean you've got to hand it to her, she's brought up those three children all on her own. 我的意思是你不得不佩服她，她一手带大了3个孩子。