Click and drag the edge of the time display box to change the size. It can be docked to the other elements in the Sound Forge window as well, if it is not not already.
btw, welcome to the Magix Sound Forge users community @paul-k1
Oh sorry, I guess you are referring to the "Status" (bar) selection time attributes at the bottom of the timeline window). I am not aware of a way to enlarge or move that display around, aside from visible or hidden. "Options> Data Window> Status"