it dissapear the Safari icon from the menu bar. How can I put it back

Try doing a Dock restart using the following Terminal command:

killall Dock

Log out/in and test. If that doesn’t work, you need to look in your user Library/Application Support/Dock for the .db. Use the Finder “Go To Folder” command. Enter ~/Library/Application Support/Dock.  Move the .db to your desktop.

Then try a dock reset.

Applications/Utilities/Terminal enter the command

killall Dock

Log out/in test. If it works okay, delete the .db from the desktop.

If the Dock is the same, return the .db to where you got them from, overwriting the newer ones.

The menu bar or the Dock? If it is missing from the Dock, quit/reopen Safari and it should then show in the Dock. If necessary, drag the Safari application from the Applications folder to the Dock.

You are welcome.