Depending on your jurisdiction, there may be specific records you are required to maintain and make available to shareholders on an ongoing basis. For example, businesses are often required to keep accurate and timely accounting records (such as financial statements and auditor reports) for shareholders to inspect upon request.
The amount of information about a corporation that a person is entitled to receive will vary depending on their relationship to the company and their purpose for reviewing the information.
For instance, someone from the general public may have the rights to inspect only a handful of documents if they request the information at least five days in advance and pay an admin fee. On the other hand, a director often has the right to inspect any company record they may need, within a reasonable timeframe, and without cost or restriction.
To confirm what information different people are entitled to receive in your company's jurisdiction, you can refer to your local business laws. Otherwise, depending on who is requesting the information and why, a business may charge an administrative fee or restrict access entirely.