How have Free Listings for Google Shopping Ads performed for you?

I just found out about this and hadn't realized it's been out over a year now to those in the States. I just started using it this week because I've had major success with Google Shopping in the past like back in 2019. I really want to see how these free listings do as so far no action but I'm guessing that's because I've just got them up and running.

Has anybody had any success from the free listings yet and how long does it take to get impressions and clicks when you first start or list an item?

Just bumping as I really need an answer on this right now.