Oh ffs. First off, I'm not from the US. I've been there for less than a month combined. Secondly, if you do want to nitpick, at least do some research first. The video in question is 60 or 30 fps depending on the quality setting.

    $ yt-dlp -F https://www.youtube.com/watch?v=j_4iTovYJtc
    [youtube] j_4iTovYJtc: Downloading webpage
    [youtube] j_4iTovYJtc: Downloading android player API JSON
    [youtube] j_4iTovYJtc: Downloading player df5197e2
    [info] Available formats for j_4iTovYJtc:
    ID  EXT   RESOLUTION FPS │   FILESIZE  TBR PROTO │ VCODEC       VBR ACODEC      ABR     ASR MORE INFO
    ─────────────────────────────────────────────────────────────────────────────────────────────────────────────
    sb2 mhtml 48x27          │                 mhtml │ images                                   storyboard
    sb1 mhtml 80x45          │                 mhtml │ images                                   storyboard
    sb0 mhtml 160x90         │                 mhtml │ images                                   storyboard
    139 m4a   audio only     │   46.85MiB  48k https │ audio only       mp4a.40.5   48k 22050Hz low, m4a_dash
    249 webm  audio only     │   49.06MiB  51k https │ audio only       opus        51k 48000Hz low, webm_dash
    250 webm  audio only     │   63.84MiB  66k https │ audio only       opus        66k 48000Hz low, webm_dash
    140 m4a   audio only     │  124.33MiB 129k https │ audio only       mp4a.40.2  129k 44100Hz medium, m4a_dash
    251 webm  audio only     │  125.02MiB 130k https │ audio only       opus       130k 48000Hz medium, webm_dash
    17  3gp   176x144      8 │   56.70MiB  59k https │ mp4v.20.3    59k mp4a.40.2    0k 22050Hz 144p
    160 mp4   256x144     30 │   37.86MiB  39k https │ avc1.4d400c  39k video only              144p, mp4_dash
    278 webm  256x144     30 │   42.59MiB  44k https │ vp9          44k video only              144p, webm_dash
    133 mp4   426x240     30 │   84.31MiB  87k https │ avc1.4d4015  87k video only              240p, mp4_dash
    242 webm  426x240     30 │   70.03MiB  72k https │ vp9          72k video only              240p, webm_dash
    134 mp4   640x360     30 │  167.27MiB 174k https │ avc1.4d401e 174k video only              360p, mp4_dash
    18  mp4   640x360     30 │  352.24MiB 366k https │ avc1.42001E 366k mp4a.40.2    0k 44100Hz 360p
    243 webm  640x360     30 │  134.68MiB 140k https │ vp9         140k video only              360p, webm_dash
    135 mp4   854x480     30 │  294.98MiB 307k https │ avc1.4d401f 307k video only              480p, mp4_dash
    244 webm  854x480     30 │  233.37MiB 243k https │ vp9         243k video only              480p, webm_dash
    136 mp4   1280x720    30 │  653.31MiB 680k https │ avc1.4d401f 680k video only              720p, mp4_dash
    22  mp4   1280x720    30 │ ~795.07MiB 808k https │ avc1.64001F 808k mp4a.40.2    0k 44100Hz 720p
    247 webm  1280x720    30 │  548.72MiB 571k https │ vp9         571k video only              720p, webm_dash
    298 mp4   1280x720    60 │  817.18MiB 850k https │ avc1.4d4020 850k video only              720p60, mp4_dash
    302 webm  1280x720    60 │  651.39MiB 678k https │ vp9         678k video only              720p60, webm_dash

And the units? Hz and FPS are generally interchangeable but FPS is more often used as a measure of how fast something renders while Hz is more often used for monitor refresh rates (a holdover from CRTs I guess).