When user register he get the email, then in email he get the link for my accoun

WooCommerce > Settings > Emails > New Account

You have to change the template that is being sent to the client if you want it to be different.

https://docs.woocommerce.com/document/template-structure/

<?php
/**
 * Customer new account email
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/emails/customer-new-account.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see 	    https://docs.woocommerce.com/document/template-structure/
 * @author 		WooThemes
 * @package 	WooCommerce/Templates/Emails
 * @version     1.6.4
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

?>

<?php do_action( 'woocommerce_email_header', $email_heading, $email ); ?>

	<p><?php printf( __( 'Thanks for creating an account on %1$s. Your username is %2$s', 'woocommerce' ), esc_html( $blogname ), '<strong>' . esc_html( $user_login ) . '</strong>' ); ?></p>

<?php if ( 'yes' === get_option( 'woocommerce_registration_generate_password' ) && $password_generated ) : ?>

	<p><?php printf( __( 'Your password has been automatically generated: %s', 'woocommerce' ), '<strong>' . esc_html( $user_pass ) . '</strong>' ); ?></p>

<?php endif; ?>

	<p><?php printf( __( 'You can access your account area to view your orders and change your password here: %s.', 'woocommerce' ), make_clickable( esc_url( wc_get_page_permalink( 'myaccount' ) ) ) ); ?></p>

<?php do_action( 'woocommerce_email_footer', $email );

See the “wc_get_page_permalink( ‘myaccount’ )”, that is linking the user to the “My Account” page where they can then reset their password. The link I sent above has the templates for the current version. You would need to change that permalink to the page you want it to be.

Or, just let it go to the “My Account” page like it already does and let them click the “Reset Password” button. That’s totally up to you.

Instead of My Account i need password reset page what should i change in below code. “wc_get_page_permalink( ‘myaccount’ )”

If it isn’t the right setting to give them the “lost password” page, there is the “edit account” page. The “edit account” is where they do reset their password.

“edit account” == /edit-account/

“lost password” == /lost-password/