FWIW I think polling on abortion is very complicated and nuanced. Yes, a majority of the country doesn't think Roe should be overturned (especially when asked like that).
At the same time, it's pretty much 50-50 on whether people are pro life or pro choice.
Then, the Mississippi case that the SC is looking at right now (15 week abortion ban) support for that outweighs those against it.
My two cents, but the people who support abortions after 15 weeks were already going to vote Democrat in the mid term and I don't really see this potential decision moving the needle a lot for 2022.