Hi Deepika,

Good Day! Please do write the fix script with below code, and run the same. It should works 🙂

var gr = new GlideRecord('sys_script_include');
if (gr.get('add sys id of script include')) {
    gr.sys_policy = ''; //remove protection
    gr.update();
    gr.deleteRecord(); --> add this line if you want to delete the record else you can set the value as empty
} 

Thanks,
Priyanka R