This phrase was popularised in mid-2019 in Australia and is a reference to both the Australia-wide UCAT exam and a global-FPS game.
Verbal Reasoning is a section inside the University Clinical Aptitude Test (UCAT) which is abbreviated as (VR).
VR is also an acronym for a term in the popular online MMO-FPS 'Fortnite' which means 'Victory Royale'.
Hence "Lets get this Verbal Reasoning" is used as a sort of cathartic relief and a battle cry for strong grinders to gee themselves up.
Guy 1: Oh shit man finals are right around the corner.
Guy 2: Fuar true. No worries though, lets get this verbal reasoning.