I don’t have a computer what should I do restore is showing

Ask a friend, acquaintance or family to use their computer, or at a public library.

Alternately, visit your local Apple Store or Apple Authorized Service Provider and they should be able to help you out.

(perhaps) You will first have to make an appointment due to the pandemic.

Call Apple in your region see: Contact Apple for support and service

Contact Apple for support and service - Apple Support

DanyMoustafa wrote:

I was updating my iPhone then it went black i restated it and now its telling me to restore my phone

I'm sure you have friends, family member who have a computer you can use.