Can someone recommend software that can create music score/notation from an audio recording? For example, if I whistle or hum something, it would get the notation for that?
You can try Sonic Visualier [1] with Chordino plugin from the Vamp Plugin Pack [2]. It won't give you a full notation, but it can estimate chords from the audio recording.
free/online options :
https://basicpitch.spotify.com/
https://ai-midi.com/
https://samplab.com/audio-to-midi
You will have to convert the midi output to notation in any notation software like Musescore