何の関係が

what does … have to do with …

→ 何
phrase Rare #20,967
what does … have to do with … Usually followed by ある; used to ask what connection or relevance something has.
JA: それが私と何の関係があるの?
EN: What does that have to do with me?

あなたの隣人で同じ学校ニコと何の関係が?

What’s your relationship with Nico, your neighbor and schoolmate?

— 嵐の中で (2018)

それと今回の件と何の関係があるんですか?

And what does that have to do with what happened this time?

— 万引き家族 (2018)

だけどそれと君の勉強に何の関係が?

But what does that have to do with your studies?

— パラサイト 半地下の家族 (2019)

でも彼と野球に何の関係が?

But what does he have to do with baseball?

— フィールド・オブ・ドリームス (1989)