Need iphone bill

If you bought your iPhone at Apple Online Shop, see the section "View or Print Invoice" in this support article:--> Viewing & Changing Orders - Shopping Help - Apple ,or contact Apple directly using this link:--> Contact Apple for support and service

In all other circumstances (Apple phisycal Stores, Authorized Resellers, who have their own accounting system) contact the seller and ask for a copy of that document.

Regards

Giulio

I had purchased the phone on 25th July 2021
, my bill got canceled, I need the bill,
 please make the bill available to me, 
thank you.

You are not talking to Apple. We can’t help you.