1) I did/made 8 deliveries in one trip.
2) I did/made 8 deliveries in that particular trip.
3) I need to make 3 trips in order to finish off all these deliveries.
Do I say did or make a trip? Are the sentences above correct? Please advise.
In this context, I would use "make/made" with both "deliveries" and "trip(s)".
I made eight deliveries in one trip.
I need to make three more trips to finish all these deliveries.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.