Question

• First of all, I am not good at scripting and I need to delete a
  windows service in a batch file.

• The service name is randomly generated, I only know the display name
  of the script. What can I do?

I tried basically as a trial

@echo off
set sname = sc getkeyname "Display Name"
sc delete %sname%

Not Working..

Answer 1

This is a general format, you must fix some details:

@echo off
for /F %%s in ('sc getkeyname "Display Name"') do set sname=%%s
sc delete %sname%

For example, if the service name is not displayed in the first line:

for /F "skip=#" %%s in ('sc getkeyname "Display Name"') do set sname=%%s

If the service name does not appear at beginning of the line:

for /F "tokens=2" %%s in ('sc getkeyname "Display Name"') do set sname=%%s

We may help you whit more detail if you show us the info displayed by sc getkeyname ... and what the info you want is. I hope it helps.