I only see transform location, rotation (Local). How to influence world coordinate, by inputting number in pose mode?
You can access information about your model in any mode, by hitting 'N' bringing up the 'Object Data' tab.
I am guessing you are wanting to see your 'global rotation' value in the form of a 'degree'. Unfortunately there is no 'object' orientation visualizer, as the code that makes up a complex object full of vertices, edges, and angles. Can't really translate a number that you want.
However, if you have a bone attached to that object, there lies your data. From what I have observed, this data can only be accessed in 'Pose Mode', while having selected your bone of choice.
Inside the 'Object Data' tab, there is a tab listed 'item'. In that tab there is a rotation data sheet. Underneath that data, is a option menu called 'Quaternion(WXYZ)'. There is an option called 'Axis Angle'. Once you click on it, you can now see a visualized number of the rotation data of a bone.