Juventus sold 520,000 jerseys with Ronaldo's name on the back of them, within 24 hours of his signing.
Which is what you'd expect.
The question is how much money
Juventus made from that.
As has been pointed out a million times on here, clubs - even huge ones - don't make a lot of money from shirt sales. And definitely not enough to finance the transfer + wages of a player like C. Ronaldo.
ETA The fallacy here (not directed at you personally - it's a general thing) amounts to:
a) assuming - bizarrely - that if half a million fans rush out to get their new Ronnie shirt five minutes after the transfer has been confirmed, these people/customers are to be viewed as a
bonus of sorts: as if a significant percentage of them wouldn't have purchased a new shirt anyway at some point.
b) assuming that the club itself makes a huge profit from selling Ronnie shirts. It was estimated that Ronnie's arrival generated shirt sales to the tune of £45m very quickly (within days). That's a lot of money but somewhere between 90% and 85% of that benefits the
manufacturer - not the football club.
ETA II Unless they had an abnormal deal with Adidas at the time, Juventus would've made - say - £6-8m from the initial shirt sales. And then you have to factor in how much of that they would've made in an average pre-season (without the Ronnie factor) anyway: a) a lot of people do buy shirts every year, regardless of individual players and b) most of them don't buy multiple shirts, i.e. they won't be buying their usual new shirt
in addition to the "special" Ronnie shirt they just had to rush out and get.
In short, given how much Juventus had to fork out for Ronaldo - transfer + wages - what the club makes in terms of extra/bonus cash from shirt sales is...nothing, really: it's probably close to being negligible as an actual factor in the equation.