I think that 'Orale' means 'Ok' or 'Let's go'. The same is in Spain when they say 'Vale'. In Argentina we say 'Dale'. For example: - Do you want to go to the party? - Orale! (Ok) // - I must to go to my work - Orale, orale it's too late (hurry up)  

Hi, Mary, I think this link may help you.

I'm also waiting for some answers given by native speakers.

https://www.speakinglatino.com/3-meanings-and-usages-of-mexican-expression-orale/

1) "Hurry up", "let's go"

2) "Ok", "I got it"

3) "¡Genial!” or “¡Tremendo!”