Quick question, do you think it's appropriate to ask for a girls number in a busy store, there was a 8/10 Cuban chick working the till, complimented her nails she thanked me and scratched my arm with her nails, maintained eye contact she would look down submissively unable to hold it and smile, She clearly liked me

Question there was about 10 people behind me her boss behind her, should i of still asked for her number? maybe wrote it on the receipt? Wasn't sure what to do in that situation so i just left.