From the Miss Universe website https://www.missmissuniverse.org/2023/ , https://www.missmissuniverse.org/live-stream/, and some online resources, Roku apparently has an exclusive streaming deal to host the 2023 Miss Universe later this week (1/14/2023 7pm ET).
Yet no mention of it on their blog (https://www.roku.com/blog), the Home Screen, or their website.
A bit disappointing with all the new features taking over the Home Screen like the Buzz, What to Watch, Featured Free, there is no mention of this exclusive streaming deal, or how to watch mentioned by Roku
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The nearest thing I saw were many references to this WWD article https://wwd.com/eye/scoops/watch-miss-universe-pageant-live-stream-free-online-1235458998/ that indicates available via https://therokuchannel.roku.com/. Some preliminary info and ceremonies before the actual pageant can be watched on the Miss Universe Youtube channel as well on the eve of the event. https://www.youtube.com/user/OfficialMissUniverse
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I will say for New Years a section appeared on the Roku channel online as well as on devices that basically you just selected/clicked and took to you the livestream so maybe something similar will occur in the next day or so.