Go to Twinkl for great music worksheets and learn how to read music.
https://www.twinkl.co.uk/resources/keystage2-ks2/ks2-subjects/ks2-music
Listen to some classical music and have a go at composing some as well as learn some musical terms. Click the link below.
https://www.classicsforkids.com/
Learn some songs and rhymes and play some games on the link below.
https://www.letsplaykidsmusic.com/
You don't need an instrument to play music learn the art of beat boxing on the link below.