Set UI text on top of screen and full width

I have an UI configured with “Scale with screen size”, Reference resolution of 480x800 and Match Height.

I want to show a text on top left of the screen, and with this configuration i can put it at the top of the screen, but not on the left side, as it’s X is set to 0 but it depends on the aspect ratio of the device (Android for now).

How can i put the text on top left of the screen?

Screenshot of how i configured the UI:

Select the text, move to top location, move anchors to surround text box, tick Best Fit.