Is it possible to set partial points?

It can be set as an option.

You can only set partial points for fill-in-the-blank, multiple descriptions, combinations, and pull-down questions. Add "#partial_score: true" in the option value.
The partial score is the score obtained by dividing the score of the question by the number of them in the quiz and multiplying by the number of correct answers.

For example, if there are four answer columns for a multiple short answer and two are correct,
points for the two correct answers will be added. It was

You can read more about it in the link below. Refer to the following link for more information.