Oxford:
an official document stating that a ruler or government allows a new organization, town or university to be established and gives it particular rights

• The Royal College received its charter as a university in 1967.
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Macquarie Dictionary 6th

a written grant by a sovereign power creating or incorporating a borough, university, company or a corporation, as the royal charters granted to establish British colonies in America.
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Columbia Encyclopedia

charter
document granting certain rights, powers, or functions. It may be issued by the sovereign body of a state to a local governing body, university, or other corporation or by the constituted authority of a society or order to a local unit.


Concise Oxford English Dictionary

charter
■ noun
a written grant by a sovereign or legislature, by which a body such as a university is created or its rights and privileges defined.
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Longman Dictionary of Contemporary English (5th)

3. [countable] a signed statement from a government or ruler which allows a town, organization, or university to officially exist and have special rights:

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Note added at 12 hrs (2023-05-04 11:25:29 GMT)
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This is a term mostly used in university degrees, pointing out to a permission given on a certain date, by an authority to establish an educational institute.


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Note added at 12 hrs (2023-05-04 11:30:13 GMT)
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If you mean the rules and regulations within a university, you may use the word "statutes "
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Oxford Advanced Learner's Dictionary, 8th Edition
Under the statutes of the university they had no power to dismiss him.


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Note added at 12 hrs (2023-05-04 11:35:25 GMT)
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https://www.surrey.ac.uk/about/governance/university-charter...