i tried this:

await prisma.token.update({
    data: {
        user: {
            connectOrCreate: {
                where: {
                    email: user.email
                },
                create: {
                    token: user.token
                }
            }
        }
    },
    include: {
        user: true
    }
})

The logic is update "token" column where "user_id" is fk to "user" table...find "token" based off "email" in "user" table... hope it makes sense