Roe v. Wade won't be overturned. Not if Trump nominates a conservative, at least. The decision, for better or for worse, has been the law of the land for over 40 years. Every woman in America of child bearing age has had the Constitutional right to choose whether or not to reproduce for her entire adult life.
Given that reality, overturning the decision would be the height of "activist judging", substituting the Justices' preferences for that of the peoples'.
What you probably will see, however, is greater latitude provided to state legislatures to restrict abortions consistent with the foundational right remaining intact. Such as, for example, abortion bans after 20 weeks. The situation will be something like that with the Second Amendment - a significant amount of regulation/restriction will be permitted. Think Heller, but in the abortion context. D.C. can't ban handguns because that would deny the fundamental right of self-defense in the home. But it could require licensure and registration. Similarly, Pennsylvania could ban abortion after 20 weeks except to save the life of the mother, because for the first 20 weeks the woman had the meaningful ability to choose whether to terminate her pregnancy.