Support for overturning Roe is actually around 30%
Even on the pro-choice side there is a lot of variance on when abortion should be restricted (similar to how Europe restricts abortions the closer to full gestation). Same on the pro-life side, views aren’t binary.
Considering most people don’t understand why Roe v Wade was overturned, I’m not sure opinions on whether it should have been mean much, since belief of what that means is all over the place.
If you asked “would you get an abortion?” The numbers are likely more skewed.