I want to climb Fleet arena ranks, who can I contact?

If you reach top 50 the only “personal” information is your username and your ally code. Both of which can already be found if somebody in squad arena fights you. Also no one really pms you unless it’s grand arena related imo.

Reaching top 5 without being a part of a shard chat might prove difficult, but without knowing how the top 20 look like fleet-wise it’d be hard to say.