你得坐XX路公交车，坐三站。

Ah ，谢谢你们！

你得坐公車，坐三站

As you are giving help, the following three are all acceptable, only the third is fairly gentle in style. 你得坐公共汽车三站。---> We usually say 你得坐三站公交（公交车）： YOu have to take bus and go three stops. or 你得坐三路公交： YOu’ll have to take bus 3. 你要坐公共汽车三站。..... 你坐公共汽车三站吧。.....