In MegaMan 1, do I need to collect the balls left by dead enemies?

In Megaman 1, enemies often leave behind colored balls (or marbles) once they have been destroyed.
Here's a blue one in Fireman's stage:
Or a purple one from Cutman's stage:
I usually will go and collect these small marbles, out of habit I suppose (because anyone should always collect anything that falls from a defeated enemy, right?).
However, I have noticed that the points appear on top of the screen immediately after the enemies die, and not when you collect the marbles associated with them (in the last screenshot, the points on top did not change when I touched the marbles).
What does collecting these marbles do?
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When did Mega Man 1 come out?
Suggested OrderWhat order should I beat Mega Man 2?
Dr. WilyMega Man characterDr. Wily in Mega Man 7First appearanceMega Man (1987)Portrayed byDave Maulbeck1 more rowSources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Rachel Claire, NEOSiAM 2021, cottonbro, Andrea Piacquadio