This one is pretty simple but will take a little time, here is how to speed it up.
When you go to a parcel fox delivery, there will be 3 options with 3 tiers of difficutly on the top of each delivery. the first one is a timer, the lower the bar is, the longer you have. the second one is sort of a trophy with a scratch on it. If the bar is not full at all, you can crash all you like and it wont affect your outcome, but depending on how high the bar is, is how fragile it will be so if you crash the percentage of the item will go down and your could fail if it gets to 0%, Finally is the upward arrow, which is the police. If it is not filled you will have no cops on you, if it is full you will.
I would recommend you find one that is less than 1000m away to make it faster, find one with no cops and honestly time and the fragleness doesnt matter since it will be less then 1000m away and if you careful, you should be fine. If you go to a parcel fox location and you dont find one you like, simpily exit out and go back in and it will refresh. Also I recommend right when you start the parcel fox mission to set a waypoint to the location because it will not do it for you.
*If you need to track how many parcel fox deliveries you have, go to Ubisoft Connect ->Stats and then scroll down to Parcel Fox Packages Delivered