Each scene is worth the same each reset. Exception is Lola and Cherry. And your first or possible first few resets.
Completly unlocked girls give in total 0.5 0.5 1 1.5 2 2.5 4 6 8 9 11 12 13 14 ?15? ??? ???. As you can see, one scene from Emma gives around double that of complete Lola. But the difference between Emma and Indira is marginal.