Are you referring to the view of the canvas in Campaign Builder? If so, you can right-click your mouse and hold it while you drag the entire campaign around and put it somewhere you can see it. This isn’t a permanent fix - the next time you go into your campaign, it will be right back where it was (because you’re not actually moving the campaign, but moving your view of it - kind of like moving the center point on a map).
To make that change permanent, you need to right-click your mouse and hold to capture the entire campaign and move it down & to the left a bit. Then back out of the campaign again. When you go back in, it should be all within your view, so you can right-click and hold to put it where you want it to be from now on.
I’m not sure why some campaigns get bumped right up at the top & left like that, but it’s happened to me also & this is what I do in my apps and in my client apps.