No, it's fake.

''<p>sinarad6686 [[#question-1412522|said]]</p>'' <blockquote>Hello, a series of options opened for me and I won the iPhone 13. Is it true? I am Iranian, I can't believe it This is my Gmail [removed email from public] </blockquote> Mozilla does not hand out $1000 plus value prizes to random people on random name websites. Variations of this obvious scam has popped up for several years now. Hopefully you did not give them any personal information like email , phone#, address, name, or credit card info (to pay that $1-2 shipping). Mozilla has done prizes for certain occasions over the years however they were things like t-shirts or such.