The VF-5000 does not appear in the Macross Plus OVA or movie, although a VF-5000B did feature in the Playstation game 'Macross Plus Game Edition' (released 2000) as a player selectable mecha.
The only anime appearance by the VF-5000 was the Zolan Galactic Whale Patrol's VF-5000G (single-seater) & VF-5000T-G (2-seater) in the 1997-8 Macross Dynamite 7 OVA.
Oher console games that the VF-5000 has featured in are: -
The VF-5000B was in the 2001 Dreamcast came 'Macross M3' as a player selectable mecha.
The VF-5000B was also in the super rare 'VF-X2 Special Edition' (year 2000), of which only 1,000 copies were released and available only as a mail-in campaign prize (I have 1 original copy ).
As Renato mentioned, the VF-5000B was to have replaced the VF-1 in the US version of VF-X2, had that game been released.
To date there have been no toys of the VF-5000 and the only model kits I'm aware of are: -
The VF-5000B, was really first made famous IMO by Studio Half Eye's 1998 1/100 scale Perfect Variable garage kit.
Yellow Submarine also released a 1/144 scale resin Fighter mode VF-5000G garage kit sometime around 1998.
Yellow Submarine also planned a 1/144 scale resin Battroid mode VF-5000G garage kit, but I'm not sure if it was ever released.
The very first time any lineart (fighter mode only) of the VF-5000 was published AFAIK was in the 1995 'Variable Fighters Aero Report' section of the 'TIAS Macross Plus book'.
Okay, do I win any prize for knowing all this useless junk?
Graham