What will happen with PlayerPrefs data after updating the app?

i am making the game in which i used PlayerPrefs to unlock the levels… now i want to update the game but i don’t know that the playerprefs data will be remain saved or reset . can anybody clear my confusion ?

It will remain there.
I take it you’re talking about on Android or IOS.
No, it doesn’t reset as default, you can reset it manually though by code or by deleting the app cache in the phone app settings.
More info at Unity - Scripting API: PlayerPrefs.