How long a SQL Agent job takes to run

USE msdb
select
j.job_id
,j.name as job_name
, s.step_name
, s.step_id
-- , s.command
,dbo.agent_datetime(run_date, 0) as step_start_date
,dbo.agent_datetime(run_date, run_time) as step_start_date_time
--,h.instance_id
,h.run_duration
,run_duration/10000 as run_duration_hours_only --hours
,run_duration/100%100 as run_duration_minutes_only --minutes
,run_duration%100 as run_duration_second --seconds
,(run_duration/10000 * 60 * 60) + -- hours as seconds
(run_duration/100%100 * 60) + --minutes as seconds
(run_duration%100 ) as run_duration_total_seconds --seconds
-- , h.*
from msdb.dbo.sysjobs j inner join
msdb.dbo.sysjobsteps s on j.job_id = s.job_id inner join
msdb.dbo.sysjobhistory h on s.job_id = h.job_id and s.step_id = h.step_id
where
1=1
and j.name like  'My Job Name'
--order by h.instance_id desc