click here, if its in ' Pending ' then yes.
If its in ' Review ' then the escrow only is funded but not released and the client is still checking your uploaded work.
When it reach the ' Pending ' it will be ' Available for usage ' after 5 days
If its in ' Pending ' Click here : https://www.upwork.com/earnings-history
To check the exact date it will be available to use in, note that all dates are in UTC time zone, so if its written 30 Sept, then 30 Sept by UTC time not yours.