Step 0 - Read these requirements first - Link
Step1: Go to this link of epic games where Discord Nitro is Listed for Free - click here
Step 2 - Make a new epic games Id, log in and then Purchase Discord Nitro for $0.
Step 3 - Wait for some time Epic Games will send you a redeem code on your registered Gmail ID.
Step 4 - Login to the Discord account and go to the nitro section and buy and put your redeem code there.
Step 5: It will ask u for a payment method, choose a card. If you don’t want to use your personal one then use this -
CARD NUMBER: 4847184940286173
MONTH EXPIRY: 05/28
Some more CC - click here
Step 6: It will ask u for ur address, go to US address gen site such as - US Random Address Generator
or Put the given below address -
21969 Windover Droce
Enjoy your 3 months of nitro.