People don't get called legends usually to the end of their career, and if Beyoncè's career ended right now (like half of you pray for every night) I honestly think she'd be called a legend.
She has 20+ GRAMMYs, 15 years of constant success, the hits, the performances, the media control, empire, and the discography.
I mean she has literally nothing else to prove at this point. After the Super Bowl and performing an entire album at the VMAs what else is needed in the portfolio.