Where is the commuter bus station to go to Qianjiang from Wuhan and what is the number of this bus?

From Fujiapo Long-distance bus station, you can find frequent buses for Qianjiang City. The ticket fare is around 55RMB and take you about two hours to reach.
You can go to the bus station and tell the ticket seller your destination and they will give you the ticket. The bus operate from 07:10 to 18:10 everyday.

your info was very useful , with many thanks and hope to see you soon . I should be in Shanghai and in WH around Feb.28 , if possible could you send me an address and phone number to contact your agency once arrive in China. Again many thanks you are so greatfull and pleasant to deal with. G.Longchamps

You probably refer to the information on https://www.travelchinaguide.com/contact_us.htm and I think you can find more interesting and useful information on that website.