in that dialogue about the bank it really translates as "it's your turn" but in fact, 该 你 了 means "you must".

還沒輪到你 / 還輪不到你 你 下一場 / 你 下一回合 / 你 下一局

还没轮到你

it's not your turn 还没到你（almost the mening:it's still not your turn）

还没轮到你。