Hi @75.Abbasdhothar, thanks for taking the time to report this! Is this a request for the entire wiki and by default for everyone going to that wiki? If it is, please follow https://meta.wikimedia.org/wiki/Requesting_wiki_configuration_changes when requesting wiki-wide configuration changes on behalf of your community.
Or is this request when you yourself view things?

I also wonder if this request is basically similar to T268632: Eastern arabic numerals (Hindi numerals) shown on several Arabic Wikimedia projects, but "the other way round"? :)

I want Arabic-indic digits(۱۲۳۴۵۶۷۸۹) by default for everyone going to "pnbwiki" instead of Arabic digits (123456789)

This case maybe similar to T212221: Request for converting digits (0-9) in to Santali

And if this is right way to set Arabic-indic digits(۱۲۳۴۵۶۷۸۹) by default for everyone going to "pnbwiki"

Then someone plz put these here https://phabricator.wikimedia.org/source/mediawiki/browse/master/languages/messages/MessagesPnb.php

'0' => '۰', # U+06F0
'1' => '۱', # U+06F1
'2' => '۲', # U+06F2
'3' => '۳', # U+06F3
'4' => '۴', # U+06F4
'5' => '۵', # U+06F5
'6' => '۶', # U+06F6
'7' => '۷', # U+06F7
'8' => '۸', # U+06F8
'9' => '۹', # U+06F9
'%' => '٪', # U+066A

Change 648276 had a related patch set uploaded (by Kaleem Bhatti; owner: Kaleem Bhatti):
[mediawiki/core@master] Adding $digitTransformTable for Punjabi (pnb)

https://gerrit.wikimedia.org/r/648276

Change 648276 merged by jenkins-bot:
[mediawiki/core@master] Adding $digitTransformTable for Punjabi (pnb)

https://gerrit.wikimedia.org/r/648276