VIf you have forgotten your login credentials or your account has been compromised, you can try to recover your account by heading to the link below. Permanently banned or deleted accounts cannot be retrieved.
Account Recovery: https://support-valorant.riotgames.com/hc/en-us/articles/360046229573-Recover-Your-Account
Account Recovery: https://support-valorant.riotgames.com/hc/en-us/articles/360046229573-Recover-Your-Account