Adding to what
thar has said:
LONGMAN DICTIONARY Reference:
https://www.ldoceonline.com/dictionary/just-nowjust now
a) a very short time ago
- Where have my glasses gone? I had them just now.
b) especially British English at this moment
- We’re busy just now – can you come back later?
MACMILLAN DICTIONARY Reference:
https://www.macmillandictionary.com/dictionary/british/just-now_3Just now
1 British at the present time
- Mrs Collins is busy just now, so you’ll have to wait.
Synonyms and related words
At the present time:now, today, currently...
2 a very short time ago
- Who spoke just now?
- ‘When did you see him?’ ‘Just now, up at the house.’