Per video, per minute or per hour?
Most editors quote per finished video for YouTube and social content, because clients find a fixed price easy to approve. Per-minute pricing suits long-form work where runtimes vary, and hourly billing suits open-ended jobs such as sorting through hours of event footage.
Whichever you choose, put the basis in the description - '14-minute final cut' or 'reels, 30-45 seconds each' - so the client sees what they paid for.