I have been chosen for Google perk 1 pair of socks order confirmation mail also received but till so far it has not been delivered
Hello @Nirmalchoudhary187
Congratulations for The Awesome Perk Received From Google Team!
Many of the local guides already received that perk, so i request you wait for the time and make an eye on your inbox for any update regarding your perk related updates!
hope this helps you.
Thank you!
Happy Mapping & Keep Contributing 
I think you should wait for some more time. It’s depend on the location. You will surely get it. Meantime keep watching inbox also for any update.