How does transform.position values behave on different screens?

Hi, I have a newbie question and I can’t find an answer. I am probably not hitting the right keywords because of my English.
If I move an object using transform.position to some Vector3 value (0,1,0) and I am happy with that position in unity looking at the preview, how will it scale on different screen sizes (but let’s say it’s still “Portrait” mode) including phones and tablets?
All topics I keep finding are Canvas UI anchors topics. Sorry if the question is repeated.

It will look proportionally at the same position. You can change and simulate various aspect-ratios and devices in the editor.