From the perspective of points, Slovenia is at the top of the group. They have only suffered one loss so far, which was against Finland as the visiting team. In their last six matches at home, they haven't lost, with 4 wins and 2 draws, the draws being against Denmark and Serbia. A win in the upcoming match will bring Slovenia closer to their second appearance in the European Championship, the first being since 2000.
Finland is only one point behind Slovenia and is also hoping to make their second appearance in the European Championship, since their debut in the previous edition. They have registered four wins with no goals conceded in the group, but also suffered two losses, both against the favorite Denmark. As a visiting team, they have already won 1-0 against Kazakhstan and Northern Ireland.
Both teams are roughly at the same level and I expect a relatively close match. Slovenia has the home advantage, but Finland has also shown progress in recent years. That's why I'm choosing the option of under 2.5 goals for this match.