I have some different games with scoreboards that use styled text, however the variables like integers and playersnames in my scoreboard always look crappy and dull because i haven't found a way to add any style to them. I don´t know if this has been discussed a 1000 times but am i able to style variables like integers and playernames?
If your leaderboard is a actually using the built-in leaderboard actions, then I'm not sure if you can apply default styles to it. You can still use the method jaxter described if that's the case.
If you are using custom dialogs for your leaderboard, you can actually apply fancy styles in a more convenient way. Set Dialog Item Style will set the text style (style = font) of any dialog item. This means all text inside the dialog will always have that style, instead of having to applied with style tags each time.