HI @Dhruvin ,
What changes do you made to your SP List itself? Add some new columns or modify some exitsing records?
It is an known issue within PowerApps that the changes you made to your data source itself would not be applied to your app immediately, unless you refresh your data source within your app manually.
As an alternative solution, I think a Timer control could achieve your needs (Refresh in real-time). You could consider add a Timer control within your first screen of your app, then set the Duration proeprty to following:
1000
Set the AutoStart property and Repeat property to following:
true
Set the OnTimerEnd property to following:
Refresh('YourSPList')
Set the Visible property of the Timer control to following:
false /* <-- Hide your Timer control */
If you made changes to your SP List data source itself, when you navigate back to the first screen of your app, the data source within your app would be refreshed automaticlaly.
Please consider take a try with above alternative solution, then check if the issue is solved.
Best regards,