Suitable way to measure the probability in percentage the similarity between two subject

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hi I’m looking for the best way to measure the interest of two person through a questionnaire of n questions Off multiple choice questions from Strongly disagree to strongly agree.

Examples:

Question 1: do you like being outdoors?

Person 1 answer: Disagree Person 2 answer: Strongly agree

Question 2: Do you like doing things for pace?

Person 1 answer: Strongly agree Person 2 answer: Strongly agree

I’m sorry but I’m new to this forum and thank you in advance