@Vijay Thanks for reaching out. You can use dayOfMonth(utcNow()) as function expression in your condition statement and check if today's only date part is less than or equal to 9 and greater than or equal to 26. If the control evaluates as true, then perform your workflow, otherwise terminate it. For more details refer to the function reference guide in logic app and control action document.
In case if you are already using this condition and your logic app workflow is not getting trigger then please review your run history and trigger history to verify individual action output and debug your workflow.