how i add data to the scrollview ?

i want to add the image sprite to the scroll view through code

Your prefab - put in Resources folder,
Content - consist in scroll view in childs
Resource.Load("YOUR_PREFAB", GameObject.Find("Content"));

i want to dashboard player pic and and its name and score in scroll view

If you got an undetermined number of player stats panels(player pic, name, score) then you should add a vertical layout group to your scroll rect(container for all those panel)(which will resize any newly parented panels to it according to the values you set). If you got a predetermined num of players(4 for example) just add 4 panels to your scroll rect. As for how to set the image, name, score etc just have a script on each panel to handle that