Ticks are what theOverwatch community usually uses to describe the marks that show up when a team captures part of a point (past 33% on Hybrid or Assault/2CP, the progress saves and is shown by a "tick" – a small arrow – in the UI).
eg:New YorkExcelsior get 0 ticks in this match.
In this context, NYXL getting 0 ticks means they never got to 33% on Hybrid or Assault's Point A.