Getting a Riot API Token
You will need a Riot Games API token to use 90% of the VALORANT API. You can get one by following these steps:
Go to developer.riotgames.com.
Login with your Riot account.
Click on “Register Product”.
Click on either “Personal API Key” or “Production API Key”.
Fill out the form.
A Production API Key could take up to a month to receive. (I’m not sure if this is always the case, make sure to check Official Riot Games Documentation for more information.)
More information can be found in the Riot Games Developer Documentation.