@alialroomi - you can try below
- get all queue lists from orchestrator api ( {{url}}/odata/QueueDefinitions )
- loop each queue name and get the list of items
{{url}}/odata/QueueItems?$filter=QueueDefinitionId eq 12345 (12345 - queuedefinitionid) - write your business logic for the count
pls refer below link to build query filter conditions - like top/ orderby/ by time
https://docs.uipath.com/orchestrator/reference/building-api-requests#section-get-requests