It's come to something when I'm not allowed to express an op

美明，多謝你的邀請
請你先看以下的例子
We haven't come to a decision on the matter yet.

Have you come to any conclusions about the story yet?

所以，It has come to something，意思大約是指：已經決定某些事（或達成某些決定）

希望幫到你！