Beat up but victorious, you continue on the trail without further incident. The rutted track emerges from a wooded hillside, and you catch your first glimpse of Phandalin. The town consists of forty or fifty simple log buildings, some built on old fieldstone foundations. More old ruins - crumbling stone walls covered in ivy and briars - surround the newer houses and shops, showing how this must have been a much larger town in centuries past. Most of the newer buildings are set on the sides of the cart track, which widens into a muddy main street of sorts as it climbs towards a ruined manor house on a hillside at the east side of town.
As you approach, you see children playing on the town green and townsfolk tending to chores or running errands at shops. Many people look up at you, but all return to their business as you go by.
The supplies you're guarding are meant for Barthen's Provisions, a trading post you find quickly - it's conveniently one of the first buildings on the road into town. A young man hauling crates in front of the building looks up as you approach, and runs inside as it becomes clear you're headed for the shop. He comes back out followed by a mellow-looking older human, and both run up to your cart as Kovoir stops the oxen.
The older man is lean and balding, and there is concern in his voice when he greets you. "Are you here to deliver Gundren Rockseeker's supplies? You look plain frightening. Bandits on the road?" This must be Elmar Barthen, a friend of your employer's who is supposed to pay you the agreed money for delivery of the supplies. From his look, it's clear things have not been going right.
I've taken the liberty of moving you straight to the place where you're meant to drop your supplies over asking you where you want to go next. To recap, you were hired by Gundren to deliver these supplies to Barthen, who would pay you on receipt. In the map of Phandalin below, you've come from the small road to the north, and the store is the first red-roofed house directly along it. click for higher resolution.