Hi @anil15694,
to have the list of the apps in a Splunk server, you can run the following search:
| rest /services/apps/local
To have the use of each apps is more complicated:
using this search, you can have all the events containing the names of the apps
index=_internal [ | rest /services/apps/local | rename title AS query | fields query ]
so you can start from it to filter your events and find the events you need (e.g. error, dashboard runs, etc...).
Ciao.
Giuseppe