Thank you for contacting ask extension!
   Here is a link to the Corvallis Garden Resource guide which is published annually by the sustainability coalition of Corvallis: https://sustainablecorvallis.org/wp-content/uploads/2026/03/2026_Garden_Guide_web_FINAL.pdf
Page 7 includes a list of local nursery's and page 9 list bulk soil companies. Note that under bulk soil The Bark Place is now called Central Bark (it's website is now: https://www.centralbarksales.com/products) 
Here is a publication about how to use compost in your garden and landscape: It includes questions you should ask before purchasing bulk compost: https://extension.oregonstate.edu/catalog/em-9308-how-use-compost-gardens-landscapes?reference=catalog

Ok. now here comes the math: 
You gave: 5 ft wide × 65 ft long berm/backfill against a 24-inch (2 ft) wall.
The missing detail is the shape of the berm cross‑section:
Option A — It’s basically a flat-topped fill to the wall height (rectangular prism)
If the whole 5-ft width is filled to about 2 ft deep:

• Volume = 5 ft × 65 ft × 2 ft = 650 cubic feet
• 650 ft³ ÷ 27 = 24.1 cubic yards (yd³)

Option B — It slopes from 2 ft at the wall down to 0 at the outside edge (triangular wedge)
If it’s a triangular “berm” profile:

• Cross-section area = ½ × 5 ft × 2 ft = 5 sq ft
• Volume = 5 sq ft × 65 ft = 325 cubic feet
• 325 ft³ ÷ 27 = 12.0 cubic yards

Truck equivalents (rough planning numbers):

• A full-size pickup holds about 2.5 yd³
• A dump truck often holds 10–14 yd³ [³]

So you’re likely in the neighborhood of:

• ~12 yd³ (about 5 pickup loads) if it’s a wedge, or
• ~24 yd³ (about 10 pickup loads, or ~2 dump-truck loads) if it’s a full 2-ft depth across. [³]

If you reply with whether it’s wedge-shaped or flat/level, I can confirm the best estimate.

A couple of planting notes for fruit trees & dogwoods in that berm

• For fruit trees, OSU Extension cautions not to create a “bathtub” of very different soil in the planting hole. Use mostly native soil, with only modest compost mixed in, so roots don’t stay confined to the amended pocket. 
• If your native soil is shallow/compacted and you’re effectively creating a raised planting area, OSU notes dwarf fruit trees generally do best with adequate total soil depth, and raised beds/berms can help—often needing about 2 ft of raised depth on top of existing soil (plus loosening/adding organic matter over time). 
• Dogwoods prefer organic soil conditions and benefit from a 2–3 inch organic mulch layer (kept off the trunk). 

Hope this helps! 
Happy Gardening!