Could I see every virtual servers session when inbound load balance?
I have see Inbound Load Balance tutorial and setup finish it.
But in the load balance status.Only see Pool total session.
Could I see every virtual servers session?
The items on the status screen are all that relayd will show you. Between that and what you can find by filtering under Diag > States you can see what is connected.
If you need more detailed information or control over balancing, you should consider moving to HAProxy.