Having trouble with set up

So I got the Z axis figured out thanks for the tip it is faster than the probe, I am still having trouble with the homing. When I home I am getting X-397 Y-397 Z-3.00 I found this post from a couple of years ago and he has a fix but when I see the word “Reset” that make my anxiety go through the roof, it could be worse and I have no idea how to go back to where it is now if it is.