Hello zhina66,
It looks like you're trying to restore a Time Machine backup to your computer. Is the issue that the computer is not finding the hard drive you have connected to it? If so, here's some basic steps you can try for USB connection issues: If a USB device doesn’t work with Mac
If you are able to get your backup hard drive connected and recognized, you can then use these steps to restore the Time Machine backup: Restore your Mac from a backup
Cheers!