Redline is part of the RPM set, and some of this skin's signature features are her geometric tattoos and motorcycle helmet. Her red and black style is somewhat reminiscent of the popular action game, Mirror's Edge. In fact, this skin looks a lot like the Burnout skin, which was first featured earlier this year.
She is available in Tier 23 of the Battle Pass and is included in the bundle purchase as well. Unlocking this skin shouldn't be a problem at all.