Hi MOALI,
Insert a Timer Control: Go to Insert > Input > Timer to add a Timer control to your screen.
Configure the Timer: Set the Timer's Duration property to how often you want to refresh the data (in milliseconds). For example, 60000 for a minute.
Auto-Start the Timer: Set the Timer’s AutoStart property to true so that it starts when the app loads.
Repeat the Timer: Set the Timer’s Repeat property to true so that it keeps triggering at the set interval.
Refresh Data on Timer End: Set the Timer’s OnTimerEnd property to refresh the data source, like this:
Refresh('YourSharePointList')
Update Gallery or Data View: If you are displaying data in a gallery or form, you may need to reset it to show the updated data. For a gallery, you might use:
Reset('YourGalleryControl')
Visibility: You can set the Timer control's Visible property to false if you do not want it to be visible to users.