I second that post. You do not need a bank account here, even if you had the credentials to get one.Banks in Argentina are not like banks in the developed world, where you can freely and cheaply move money around. As Fiscal suggested, you probably do not need a bank account in Argentina, it will give you too much headaches.
A lot of Argentines do not have a bank account (this article says over half: https://www.google.com/amp/s/www.clarin.com/sociedad/52-cuenta-bancaria-crecio-brecha-ricos-pobres_0_r1mzAsTkm.amp.html ), there are ways around banks in Argentina.
Cash is king. Bring some dollars when you enter the country, which you will be able to exchange at a much better rate than if you go through banks. If you are out of money in Argentina, wire money to yourself through Western Union or Xoom or similar services, they will give you a slightly lower rate than if you had the money in cash, but still a much better rate than if you go through local banks.
In my opinion, the maximum amount of cash to enter the country with would be nothing greater than $2,500.00 USD. It will take you very far and give you plenty of time to adjust. If you were to get robbed, (I recommend carrying a drop wallet.) it won't ruin you. Even though you would be at the official rate and depending upon your credit card, there may be currency fees, your plastic is a tool as well. But as Fiscal posted and as have many others, use WU to send money to yourself as you need it. The exchange rate will be very competitive and your buying power ("poder adquisitivo") won't start being eroded until the pesos hit your hands.I use Transferwise if I want to make bank transfers to someone in Argentina or withdraw cash from an ATM (bad exchange rates!). If you have a DNI you can charge money on a MercadoLibre card. What works best for me is sending myself cash via Western Union, which gives me close to the blue rate. I would not fly down here with $10k in cash to change into pesos because, you just never know here.