[mchammer]

Where can I find the form?

[serkan]

Hi,
Which form you want to edit?

[mchammer]

The contact form that is on the contact section. I want to translate and addiktoivin field. Is there other forms?

[serkan]

Hi, Please read the localization section in the documentation.
You should install and run loco plugin then you can easily translate all your theme easily.
Also, you can use an alternative plugin instead of the default contact form.
https://wordpress.org/plugins/ninja-forms/