The Week 5 Secret Battle Star Location for Season 6 in Fortnite can be found after you complete 5 weekly challenge sheets. This will also count towards your Hunting Party Challenge progress.
The Loading Screen hint for week 5 points you towards the castle.
Youtube Playlists (Season 6):
Season 6 Challenges
Fortnite WEEK 8 How to Complete Stage 3: USE A RIFT Challenge in Season 6
Fortnite WEEK 8 Fastest way to get Trick Points in Season 6 (Easy Trick Location)
Fortnite WEEK 8 Fish Trophy Locations (Season 6 Challenge / Dance with a Fish Trophy)
Season 6 Secret Battle Stars
Secret Banner Location WEEK 8 Fortnite | Season 6 Hunting Party (Secret Battle Stars/Banners)
Fortnite | All 7 Secret Battle Stars & Banners to Unlock Hunting Party Skin (Season 6)
Secret Battle Star Loaction WEEK 7 + Hunting Party Skin | Fortnite Season 6 A.I.M Outfit
Season 6 Map Changes
Flying Chair / Mini Cube appearing in Superhero Base in Fortnite (New Event Changes Season 6)
Complete Butterfly CUBE EVENT in Fortnite | In-Game View of New Map Changes after Massive Event
Chiller Trap Trick to Travel Faster in Fortnite (Fastest Sprint Using New Freeze Trap in Season 6)