Good day everyone does anyone have an example of the SF-50. I am a veteran applying for the CBP position this form is confusing

If you are not a current or former federal civilian employee, you don't have one. The SF-50 is generated by your admin section when you begin, end, or otherwise change your status in a federal job.

So, if you're applying online for CPB and you have never had a civil service job, you don't need to include one.