Program to provide CRUD operations for a Boxers(Fighter) table in a database
Convert member field to local variable when you can

In BoxerDAO, the myBoxerDB member can be converted to a local variable.
Each utility method gets an SQLiteDatabase instance from the helper.
The class needs only an SQLiteOpenHelper as a member field.

Refer to types by interfaces

In BoxerDAO,
myScoresHelper can be declared as an instance of SQLiteOpenHelper.
It doesn't use any features of BoxScoresHelper.

Class design

BoxerDAO is only aware of Context to get an instance of BoxScoresHelper.
It would be better if it wasn't aware of Context at all.
You could pass to the constructor an SQLiteOpenHelper instead.

Naming

Prefixing member fields with "my" is not a common convention.
You could simply drop that.

Coding style

There are too many blank lines in the code.
This is unnecessary, it would be good to trim the code a little.