This came from whatever sites or links you clicked to bring that to your side this isn't a Mozilla issue.

NotZgiven said

that showed Amazon 1000 dollar gift card - why is Mozilla doing a phishing type process?

No it is not valid. Mozilla does not reward people with expensive items for a simple survey or to have to pay $1 to get it. This concept sounds much like a similar scam going that was going on a short while ago on trying to trick people into giving their personal details and credit card info for a iPhone X for only $1.

I say this because another poster yesterday was saying he thought he won a $1000 gift card and had to pay a $1 and give personal details to get it and wonder why it was not working.

Below images is a example of the mentioned iPhone X for a $1 scam. I have seen people posting links of same or similar to bankof-server46.loan for this iPhone X scam and one image has server80.loan as part of url.

These obviously fake "You won a insert expensive item" or "get insert expensive item for only $1" can popup from some Ads on some web pages and not necessarily due to malware on Windows.

If Mozilla were to by small chance do such prize offering it would be from a *.mozilla.org/* url and not on some random weird url.

I have seen a promotion case where you could get stickers from Mozilla however there was no charge in doing so.

Mozilla has done surveys over the years by way of http://qsurvey.mozilla.com which is surveygizmo.com