Has anyone else been contacted about this? Actually done it?
I’ve got nothing. You must be special! 
Assuming it’s the same thing I tried, each three- or four-question survey only pays 10 to 30 cents, so it’s not like you’re going to get rich. It accumulates in your account until it reaches a big $2 payout and then is transferred to your Paypal account.
The one I was sent requires a device that tracks your internet and tv usage. Here’s a video about it. They claim you make $500-600 per year.
https://surveys.google.com/google-opinion-rewards/audience-measurement/