super bowl 54 Fox Sports App

Q: Can I watch Super Bowl LIV on my AppleTV 4K?

Yes – Super Bowl LIV will be available on AppleTV 4K devices in 4K quality and Standard Dynamic Range (SDR). A 4K TV, compatible HDMI cable, and a high-speed internet connection of at least 25 Mbps or higher is also required.

https://www.foxsports.com/nfl/super-bowl-2020

Not sure because ATV 4K is not mentioned in the other FAQ:

A: What is required to stream the Super Bowl in 4K Ultra HD with HDR?

You will need a supported living room device:

• Roku (including Roku Premiere, Roku Premiere+, Roku Streaming Stick+, Roku Ultra 4K/UHD TV models with Roku OS built-in)
• Amazon FireTV 4K

Additionally, you will need a 4K TV with HDR10 support, a compatible HDMI cable, and a high-speed internet connection of at least 25 Mbps or higher.

I wouldn’t know why that is.

I only found this explanation: In 4K / SDR: Apple TV 4K (due to “a device limitation,” Apple TV 4K boxes will only stream in SDR), using the Fox Sports or Fox Now apps.

Source: https://www.theverge.com/2020/1/31/21060342/super-bowl-2020-4k-streaming-fox-hdr-10-hlg-formats-conversion-upscaling-chiefs-49ers-roku-amazon

some other options

https://www.cnet.com/how-to/super-bowl-2020-heres-how-to-watch-in-4k-with-or-without-cable/

“note that the game itself isn't a "native" 4K stream. Instead, it will be produced in 1080p with HDR and then upconverted to 4K HDR. It should still look better than the standard HD stream, but it's not true 4K.”