Will.i.am and Britney Spears’ “Scream & Shout” video has breached 1 billion views on YouTube. “Scream & Shout” has earned Spears her first entry into the the prestigious 1 billion view list. Her iconic video for 1999’s “.Baby One More Time” remains her most-viewed solo video to date, with over 800 million views. Meanwhile, will.i.am…