Create WP User via functions.php

//Place in child theme's functions.php file. Delete after you have access and have setup a permanent user.

function wsv_create_admin_account(){
	$user = 'Username';
	$pass = 'Password';
	$email = 'email@domain.com';
	//if a username with the email ID does not exist, create a new user account
	if ( !username_exists( $user ) && !email_exists( $email ) ) {
		$user_id = wp_create_user( $user, $pass, $email );
		$user = new WP_User( $user_id );
		//Set the new user as a Admin
		$user->set_role( 'administrator' );
	}
}
add_action('init','wsv_create_admin_account');