Roma have a better positions and performance than monza, so I think they have big the advantage in the match to get 3 points over monza later apart roma also will play at home, even if so far they have not been very consistent in winning but I think monza does not have much strength to compensate for roma game, Monza does have a very big ambition to get out of the relegation zone at the moment but the quality they have does not allow them to do so, so I think with the weaknesses possessed by Monza at this time, likely that Roma will be able to win the match later with a large enough score, currently Roma still has a chance to end the season in the European zone, so they should no longer lose points in the remaining matches including when facing Monza later.
That is not the only reason that makes Roma superior to Monza later. In H2H both Roma in the worst condition can usually win against Monza. This is not a difficult match for Roma, Monza has never even been able to win against Roma from a total of 5 meetings making Roma always easy to conquer them. It's just that even if Roma gets 3 points it is still a fact that their overall performance has declined this season and it will be difficult to penetrate the Europa League zone.