To determine the code-point value of a Unicode character in SQL Server, you can use UNICODE() function which is provided by default in SQL Server.

Code Point:
Every character in a character set (ASCII, UNICODE etc.) is assigned a numeric value, that is known as Code Point.
Or
A Unicode Code Point is a unique number assigned to each Unicode character.

For example, if you want to determine the code-point value of English letter A, then you simply need to write below command in SQL Server.

SELECT UNICODE('A')

This will output its code-point value.

Note: You may have to prefix N before the character if the character is a Non-ASCII character. N stands for National Language Character Set.

SELECT UNICODE(N'ह')

See below example image:

How to check code point value of a Unicode character in SQL Server?