This is the text of the announcement bar. Please go to your theme customizer -> Header setting check if there is an option to change this text.
The announcement bar setting must be there to change the text.
This is an accepted solution.
Jack from OpenThinking here!
You need to click on Online store > Themes > Customize > Theme settings > Advanced settings > Announcement
let me know if this works for your. If yes; accept my answer and give me thumbs up! Thank you.