I was lucky enough to get an invite to the VALORANT closed beta, but after playing through the training map and my first game, my ping was averaging in the 200s.
I asked the people I was playing with where they were from, lo and behold, they were all in Brazil. I also noticed that my payment options were in the wrong currency. There seems to be a moderately common issue of being put into the wrong region. I am located in the Central U.S. I immediately looked into changing my region in VALORANT, but could not find the option anywhere.
Good news/bad news there. The good news is, that it can be changed. The bad news: it can only be changed by Riot through a support ticket. Based on Twitter and Reddit reports, it could take a little while for Riot to respond to support tickets.
First, check out what region your account is bound to at account.riotgames.com. To update this, you must create a support ticket with Riot. Submit a request with Riot here
While you are waiting for Riot to make the change, you can queue with a party in your region and play on local servers that way. Having trouble finding your friends from a different region? Try to download and install League of Legends and make friends through the LoL client.