What was university of enrollment in 1970?

There's no single answer to "university enrollment in 1970." That depends on which university you're asking about. To get the enrollment for a specific university in 1970, you would need to consult that university's archives or historical records.

However, you can say that overall university enrollment in the United States in 1970 was significantly lower than it is today, but still substantially higher than in previous decades. Exact figures vary slightly depending on the source and definition of "university," but it was in the millions. You could find more precise national statistics from sources like the National Center for Education Statistics (NCES) if you're interested in that broader context.