https://learn.microsoft.com/en-us/answers/support/reputation-points
You can earn reputation by first participating and contributing positively to the community on Microsoft Q&A. Then, as others recognize your contribution (say by somebody accepting your answer as correct), you’ll receive reputation points.
Below is a table that shows the activities we track in the recognition system and the points associated to those activities. There are many activities that award zero (0) points - those are listed to help you understand what we deem as quality contributions. Also note that not all activities in this list will appear in your profile activity feed; for instance negative actions are not listed publicly.
Activity Points earned
You sign in into Microsoft Q&A for the first time 1
Your feedback gets approved 50
One of the feedback you voted for gets approved 5
You have content reported for moderation -10
You had content reported for moderation and the moderator subsequently found it did not require action 10
You received a vote to a question, answer, comment, or feedback item 5
You accepted an answer on a question you posted 20
A user accepted your answer 75
Please vote as the answer.