Im adding the code in the scheduled action:

and when i click "run manually" to test it i get this error:

ValueError: : "name 'x_report' is not defined" while evaluating
"def delete_duplicate_records(self): records_to_delete = []\r\n    # Search for records with the same x_date_repaired on the same day\r\nduplicate_records = x_report.search([('x_date_repaired', '=', fields.Date.today())])\r\nseen_combinations = set()\r\nfor record in duplicate_records:\r\n combination = (record.x_name, record.x_studio_serial_number)\r\nif combination in seen_combinations:\r\n  records_to_delete.append(record.id)\r\nelse:\r\n  seen_combinations.add(combination)\r\n    # Delete the duplicate records\r\nx_report.browse(records_to_delete).unlink()"

Hi,Please refer the below lines of code
you can create a scheduled action by using below code:

<odoo>
<record id="auto_delete_duplicate_record" model="ir.cron">
        <field name="name">Duplicate: Delete duplicate record</field>
<field name="interval_number">1</field>
<field name="interval_type">days</field>
        <field name="numbercall">-1</field>
        <field name="user_id" ref="base.user_root"/>
        <field name="doall" eval="False"/>
        <field name="model_id" ref="model_your_model"/>
<field name="code">model.delete_duplicate_records()</field>
        <field name="state">code</field>
    </record>

</odoo>

And write the Python code your function in your module python file:
def delete_duplicate_records(self):    records_to_delete = []
    # Search for records with the same x_date_repaired on the same day
    duplicate_records = YourModel.search([('x_date_repaired', '=', fields.Date.today())])
    seen_combinations = set()
    for record in duplicate_records:
        combination = (record.x_name, record.x_studio_serial_number)
        if combination in seen_combinations:
            records_to_delete.append(record.id)
        else:
            seen_combinations.add(combination)
    # Delete the duplicate records
    YourModel.browse(records_to_delete).unlink()
And you can also refer the below blog to know about more about scheduled action:https://www.cybrosys.com/blog/how-to-configure-schedule-actions-in-the-odoo-16

Hope it helps