Sky Go lets Sky subscribers stream their TV package on the go, including Sky Sports, Sky Cinema, and premium channels. It's locked to the UK and Ireland, but a VPN lets subscribers access Sky Go while traveling abroad. The reason for this is structural: streaming services license content country by country, and Sky Go's catalogue in each market reflects whichever distribution deals were signed there. A title that's available on Sky Go in the US might be on a competitor's platform in the UK, or vice versa.
A VPN sidesteps the geography problem entirely. Sky Go sees the IP of GhostShield's exit server, not your real one, and serves you the catalogue for that exit region. The streaming app makes no distinction between a 'real' local user and a VPN-connected one as long as the traffic looks like residential broadband — which is exactly what WireGuard with ChaCha20-Poly1305 over GhostShield's network produces.
What you can't do is bend the laws of physics: a stream from Sky Go's origin servers will always have more latency from far away. Pick the GhostShield server closest to Sky Go's data centres in the region you want, not the one closest to you.