The 31-year-old admitted that she was "speechless" after taking home the top prize, and that she cried tears of happiness.
"It's not about the trophy. It's beyond the trophy," she told People.
"The experience and the challenge and everything you go through - it's a lot of life-changing experiences in three months and it's just so intense."
Scherzinger's partner Derek Hough was also elated with the final result.
"Nicole and I burst out into tears backstage after our Argentine tango. We were so overwhelmed with how happy we were with what was going on tonight. Win, lose, draw we were going to be happy. But to win is phenomenal," he said.