You will get the content from the Fortnite Crew at arount 8 PM EDT / 7 PM EST on the last day of each month. This includes the Battle Pass from the current season, an exclusive Outfit Bundle, and the Rocket Pass Premium.
And what about the V-Bucks?
You will receive the V-Bucks on the specific billing date each month when you have subscribed to the Fortnite Crew. If you need to check when is your billing date, you can head over to How to check the next billing or payment date of your Fortnite Crew subscription
*Keep in mind that both dates for getting V-Bucks and rest of the Fortnite Crew may vary.