Do I have to get language credit if I am already fluent in another language for college admissions?

For colleges that look for that (as opposed to just going by proficiency level), it may also be seen differently if you are a recent immigrant who started learning English relatively recently (i.e. English would be seen as the “foreign language” that you had to learn), versus a heritage speaker in the US (or from another English-speaking country) who learned both English and another language from early childhood.