The Hammers refused to match Brentford's £15m valuation of the 24-year-old, who has 18 months remaining on his contract at the Sky Bet Championship club.
"He [Scott] is a good player, of course he is a good player. We watched him for many, many games," Bilic said.
"But I believe that we have really good strikers in our squad and that's why we won't have a Hogan deal.
"Definitely a good player, good age and scoring goals in the Championship. It's not a question of him, it's a question of what we've already got in the squad. "