Basically, is there anytime where the symbiote that is named Venom in the credits, is called Venom in the movie?
Per the film transcript, Venom is never named or referred to as such in the film.
He does get mentioned in the official novelisation, which was based on an earlier version of the screenplay
“No. Not Eddie. Not anymore. I’m poison to you now, Spider-Man,” he said, flicking his tongue around. “I’m . . Venom. And I just want you to know, I took your advice You told me if I wanted forgiveness, I should find religion, so I went to church last night and asked for it. I asked for everything that had been taken away from me. Damned if I didn’t get it. And more. I was handed power I never dreamed of, Pete. It just… poured down on me as if from heaven itself.”
“You’ve got to take off the suit!” Spider-Man told him. “It’ll—”
Venom leaped to the rear of the car and kicked Spider-Man across the face, knocking him from the vehicle.
He's also named in various licensed products including Spider-Man 3: I am Venom, a book that was bizarrely aimed at young readers.
and in the Spider-Man 3: Movie Storybook
Looking up, Eddie saw that Peter was really Spider-Man, but there was no time to think about that. When Eddie opened his mouth, a drop of the goo fell on his tongue . . . transforming him into a monstrous creature called Venom!
Venom was born with one consuming urge: to get revenge. He began to form a plan, and it involved Sandman.
And as you've already mentioned, Venom is repeatedly referred to as "Venom" in the end credits.
Topher Grace as Venom/Eddie Brock
Costumes for Spider-Man, Black-Suited Spider-Man, The New Goblin, Sandman and Venom Designed by James Acheson
Marvel, and all Marvel Characters including the Spider-Man, Sandman and Venom Characters TM and © 2007 Marvel Characters, Inc. All Rights Reserved.