Complex sentence: Before he began his newfound skill of dancing, Scott worked at a local Wal-Mart, during which he appeared on "So You Think You Can Dance" and "America's Got Talent" with his dance crew Remote Kontrol.
Split into simpler sentences: Before he began his newfound skill of dancing, Scott worked at a local Wal-Mart. During which he appeared on "So You Think You Can Dance" and "America's Got Talent" with his dance crew Remote Kontrol.