Please tell us some basic information before asking for help:
my zenfone is on V16.0615.2006.131 can i upgrade to android p?
No, your are already on P.
In ZE620KL, the first 2 numbers is a sign of the Android version.
17> Android 10
16> Android 9
15> Android 8
WW-16.0615.2006.131> Android 9
#[Zenfone] How to update firmware on my phone?
#ZE620KL Firmware Spot