I can’t remember my iPhone password.

So what should I do then

As lobsterghost1 mentioned above.......visit your Apple Store Genius Bar for help.

Alternately, you could take the phone to an authorized Apple service shop. You can find a list of authorized shops in your area using this link:

Find Locations

Then you will need to see if you can borrow a friends computer or visit your Apple Store Genius Bar for help.