I am assuming that you are trying to ask how to change your privacy settings so that you can choose who can view your account.
If you go to facebook and log in, right of your name across the top will be a cog (circle).
A drop down box will appear, click privacy settings.
For the future, please remember, we are not psychic. If you want help, then you need to tell us what you need help with. This was just a stab in the dark, I really have no idea what you do need help with.