“If i turn it off will it render out as “off” when i am done?”
Not necessarily.
I checked a few Export options like AVI and Avid MPEG2 and Sound is on by default so depending on the format you want to output as, you will have to uncheck Sound if output settings allow for that. There are lots of cheap or free programs to demux the audio from the video and give you a video-only stream and you really should do that outside of AE before bringing the footage into your proj if you don’t want to have to deal with it. You can eliminate the audio in most video editors by just outputting the video stream without sound.