In some territories, you can rent or buy the movie. Always check the "subtitles" filter to ensure Portuguese is listed.
If you are searching specifically for the "Legendado" (subtitled) version, here is what you need to know: iparty with victorious legendado new
Paramount+ holds the rights to most Nickelodeon content. In Brazil and Portugal, Paramount+ often includes the movie. However, the "legendado" options vary: In some territories, you can rent or buy the movie