Hi how long and how much does it cost to Ju Rhong shi from Nanjing Airport?

You must refer to Jurong City. Well, I suggest you take shuttle bus line 2 to the local South Railway Station. Then walk to the nearby South Bus Station, where there are frequent buses to Jurong city. The whole journey takes nearly 2 hours.
The shuttle bus fare is CNY20 and the bus to Jurong costs CNY15 per person.