How do I get all files and folders on Dropbox Business account

there are several folders that are inside team folders and show up within the team folder on the UI, but when I list those folders via API I don't see `path_display`

Do you mean you're calling for a namespace directly as an admin without a root like this?

curl -X POST https://api.dropboxapi.com/2/files/list_folder \
    --header "Authorization: Bearer <ACCESS_TOKEN>" \
    --header "Dropbox-API-Select-Admin: <ADMIN_USER_ID>" \
    --header "Content-Type: application/json" \
    --data "{\"path\": \"ns:1990893360\"}"

# {
#   "entries": [
#     {
#       ".tag": "folder",
#       "name": "test",
#       "parent_shared_folder_id": "1990893360",
#       "id": "id:hro-cp_zmJAAAAAAAAAACg",
#       "sharing_info": {
#         "read_only": false,
#         "parent_shared_folder_id": "1990893360",
#         "traverse_only": false,
#         "no_access": false
#       }
#     },
#     {
#       ".tag": "folder",
#       "name": "test folder in team folder",
#       "parent_shared_folder_id": "1990893360",
#       "id": "id:hro-cp_zmJAAAAAAAAAADw",
#       "shared_folder_id": "3980274560",
#       "sharing_info": {
#         "read_only": false,
#         "parent_shared_folder_id": "1990893360",
#         "shared_folder_id": "3980274560",
#         "traverse_only": false,
#         "no_access": false
#       }
#     }
#   ],
#   "cursor": "...",
#   "has_more": false
# }

The paths aren't returned because this call isn't rooted anywhere; i.e., there's no root for the paths to be mounted relative to.

Instead, you can supply the path root using the 'Dropbox-API-Path-Root' header (from the Namespace Guide), like this:

curl -X POST https://api.dropboxapi.com/2/files/list_folder \
    --header "Authorization: Bearer <ACCESS_TOKEN>" \
    --header "Dropbox-API-Select-Admin: <ADMIN_USER_ID>" \
    --header 'Dropbox-API-Path-Root: {".tag": "root", "root": "1990815600"}' \
    --header "Content-Type: application/json" \
    --data "{\"path\": \"ns:1990893360\"}"

# {
#   "entries": [
#     {
#       ".tag": "folder",
#       "name": "test",
#       "path_lower": "/team folder 1/test",
#       "path_display": "/team folder 1/test",
#       "parent_shared_folder_id": "1990893360",
#       "id": "id:hro-cp_zmJAAAAAAAAAACg",
#       "sharing_info": {
#         "read_only": false,
#         "parent_shared_folder_id": "1990893360",
#         "traverse_only": false,
#         "no_access": false
#       }
#     },
#     {
#       ".tag": "folder",
#       "name": "test folder in team folder",
#       "path_lower": "/team folder 1/test folder in team folder",
#       "path_display": "/team folder 1/test folder in team folder",
#       "parent_shared_folder_id": "1990893360",
#       "id": "id:hro-cp_zmJAAAAAAAAAADw",
#       "shared_folder_id": "3980274560",
#       "sharing_info": {
#         "read_only": false,
#         "parent_shared_folder_id": "1990893360",
#         "shared_folder_id": "3980274560",
#         "traverse_only": false,
#         "no_access": false
#       }
#     }
#   ],
#   "cursor": "...",
#   "has_more": false
# }