Its really hard to get a good gauge on that. There is a lot of data but its all very piecemeal and hard to aggregate. Could spend a week trying to get an idea of it and still not be sure. Here is my couple minute version though.
For 2020 in Mexico alone from Bitso: "Frida Vargas, head of business sevelopment at Bitso, told CoinDesk the company processed about $1.2 billion in remittances between the U.S. to Mexico in 2020. “Our main users are remittance companies, who use crypto technology to improve and make the remittance sending and collecting process easier,” she said."[1]
In Argentina: "Cryptocurrency penetration was at 12% in
Argentina, vs. 29% credit card penetration,
indicating impressive crypto uptake in that
country"[2]
"There is high interest in receiving crypto
remittances in various LatAm markets, such
as Peru (33%), Argentina (19%), Mexico (15%),
and Brazil (8%)"[2]
