Vampire the Masquerade, including 5e is part of what is variously referred to as "World of Darkness", "Old World of Darkness", and "Classic World of Darkness". It is compatible (though I use the term somewhat loosely) with Werewolf: the Apocalypse. It is not meant to be used with Werewolf: The Forsaken.
"New World of Darkness", which includes Werewolf: The Forsaken is now primarily referred to as "Chronicles of Darkness" in an attempt to make the distinction more clear and vampires in Chronicles of Darkness come from Vampire: The Requiem.
With all of that said, a storyteller willing to put in some work can force a degree of compatibility.
While it required a lot of rules adaptations I have used the lore from Vampire: The Masquerade 20th Anniversary Edition for NPCs that appeared in a Mage: The Awakening Game and it worked quite well. (We were all more familiar with Masquerade than Requiem).
Based on that and general familiarity with the lines, I think it wouldn't be too hard to use Werewolf: The Forsaken lore with Vampire: The Masquerade if you and your players wanted to for NPCs.
Also, as VLAZ properly emphasized, it takes some... careful rules interpretation and storyteller work to make Vampire: The Masquerade work with Werewolf the Apocalypse. This is part of why I mentioned that I used the term compatible somewhat loosely, though they were at least officially meant to take place in the same setting.