Why my contact form is not working?

It would help to know which plugin you are using for this.

Also, be sure that you have configured it correctly, and that you have entered the correct email for it to send emails to.

Also, be sure that your webhost is configured to send email properly, and that your “to” address will actually receive mail from the “from” address in the form.

Depending on your system, it may take a while for emails to get through. Email can be tricky, and it’s not always the fault of the plugin.