When in drawing mode, right-click on the bend feature in the model tree, and select "Show Dimensions by View", or "Show model annotations".
However, I would use the dimension tool in the Drawing mode Annotate tab to "draw" the bend radius and bend angle dimensions. Insisting on creating drawing of a sheetmetal parts by "showing" the driving model dimensions just doesn't work well in Creo, because the system seem to "freeze" them at their originally created locations. So if your feature was "moved" from its original location in space (as normally happens because there often are subsequent bend operations), then often its dimensions will be shown "in the middle of nowhere" on the drawing.
