what is the cost by train to travel from Xuzhou to Jishou and what is the travel time

There is no direct rail connection between. You may choose to go to Changsha from Xuzhou first and then to Jishou. The duration and price depends on the train type and seat class. For a bullet ride to Changsha and a normal ride from Changsha to Jishou, the duration may around 14 or 15 hours, exclude the connection time between two trips. You can check it here online