Hi, @Brian96
Thanks for posting, and welcome to the Roku Community.
We understand your concern regarding shows or content on Disney+ or MAX where the subtitles do not appear, and we're here to guide you in setting up subtitles, also known as closed captions, on your Roku device while streaming.
Please visit this support article on How to enable closed captioning
In addition, if the subtitles or closed captioning are still not available on the apps that you are streaming, we would advise you to contact the channel provider and inquire for assistance since streaming apps have their own dedicated settings for enabling subtitles or closed captioning.
We hope you find this information helpful, and feel free to let us know if you have further concerns or inquries.
Thanks,
Kash
Takashi O.
Roku Community Moderator