I don't know how much Juventus care about joining the Europa League or Europa Conference League at this point. But if I were in their shoes I would do my best to increase my position by one at least. Because maybe the Europa League is technically not what they want for this season. But they can still use it as a step to join the Champions League next time.
They can increase the number of alternatives to do so I mean. Who knows maybe they will have a problematic season in the Serie A again and then the Europa League title would be another hope for them to reach their target. They couldn't make this happen this season though but let's see.
You are correct; it will be much better for Juventus if they make every effort to qualify for the Europa League. At the very least, it will help them perform better than being in a situation where they have no other options. I know it will be very upsetting for them to finish in seventh place, but losing does not mean the team is doomed; they can still play well and qualify for the Europa League the following year.
Even though I am aware that games are extremely tough to forecast, I think Juventus still has a chance to advance to the Europa League if they play well in their final game. Roma is only one point ahead of them in the standings.