Set mechafusion levels to maximum.
Hunter Protocol dance is a Epic Fortnite Emote. This emote is one of the Fortnite Battle Pass cosmetics in Chapter 2 Season 5. You can get it once you have reached Tier 79.
The gesture Hunter Protocol belongs to Chapter 2 Season 5. This gesture is available as a reward by unlocking Level 79 of Battle Pass from Chapter 2 Season 5.