He never said I will overturn Roe Vs. Wade.
Yuge difference.
Roe v. Wade was a Supreme Court decision. Trump said he was going to work to change Roe v. Wade. How else do you change a Supreme Court decision without somehow fundamentally overturning it?
For example, the Dred Scott decision was a bad Supreme Court decision, and it had to be changed too. There were several tools used to change (overturn) that decision (including a Civil War, a "Civil Rights Act", and the 14th Amendment to the Constitution). Republicans back then had the courage of their convictions, and the fortitude to openly express their views in an honest and forthright manner, and not try to hide them under a bushel, and pretend they were something which they were not.