Fresh meat contains vitamin C. Also, vitamin C is needed for the synthesis of collagen and an all-beef diet contains a lot of collagen. Scurvy is only a problem for people like sailors in the old days who did not have access to fresh meat on extremely long voyages. Finally, consider the fact that human beings have lived in northern climates through ice ages that lasted a thousand years.
A quick consultation with Dr. Google states caveats to what you are claiming (this is data from a carnivore advocate [1] btw.): you have to consume 2.2lbs of grass fed beef to get ~25mcg of Vitamin C. The daily recommended value is 75mg [almost double if you are pregnant] (you need 1000mcg to equal 1mg). The WHO recommends at least 45mg a day to prevent scurvy. 1 decently sized orange would cover the recommended daily value. Beef seems woefully inadequate to me at least.
The next fascinating question: how much does 2.2 lbs of grass fed beef cost? Just looking at the prices for fresh organic steak is almost $40 per pound at my local supermarket. That is an amazingly expensive diet! Imagine feeding a family of four on that! That is almost $400 per day, $2800 per week, $146,000 a year in just food costs. Yikes!
There is a massive community of people who are only eating ribeye steaks. Many have been doing this for over ten years. They aren’t getting scurvy. So that’s the end of that story. And you don’t need to eat grass-finished beef (it has a worse flavor profile anyway). I’m sorry you can’t afford it.