Move rear sight the direction you want the bullets poi on the target to move.
guys I'm an idiot - it shows how long i've had a rifle with iron sights. I forgot how dovetail sights work. Move along... nothing to see here
Yep... I'm a dummy
Don't sweat it. I do stuff like that all the time.
I have managed to keep posting about my whoopsies online, so far anyway.
If that sight is simply loose in the dovetail and it's not where it is because the barrel is crookedy, you can tighten the fit by removing it and stippling the bottom of the sight a bit. Or, get a Williams WDOS sight, which has a locking screw, plus also accepts various leafs and apertures.
The RAR Mach 2 I bought came loose in the box with the bolt rattling around and the trigger guard broken off, courtesy of UPS.