Career Milestone Gamerscore amount equivalent

I can get the Security chest and MPHelm but what is Milestone 20’s Gs amount equal ? 800 ? 600 ? 500 ?

What milestones are you referring to? The old Halo Waypoint app?

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> What milestones are you referring to? The old Halo Waypoint app?

I was wondering the same thing. Can you be a bit more specific?