The 21-year-old went down seven minutes into the match after contact from Villa defender Tyrone Mings and was later substituted at half-time after being unable to continue.
Scans have since revealed a displaced fracture and Scott will undergo surgery to stabilise the jaw.
Bournemouth manager Andoni Iraola described the incident to BBC Sport as ‘a very violent elbow’.
Scott has made 19 Premier League appearances for the Cherries this season and had impressed off the bench in their 2-1 win at Arsenal in their previous outing.
Maya Le Tissier, meanwhile, scored from the penalty spot as Manchester United’s Women’s Super League campaign ended with a 4-3 defeat against Arsenal at the Emirates on Saturday.
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