How can change “Clear” text from my variation change. Change reset link.

If you want to change reset link of Variation. see following example.

You have to add following code to your theme’s(specially child) functions.php file or you can use any code snippet plugin to add code.
Code is:

add_filter('woocommerce_reset_variations_link','wpt_custom_reset_link_change');
function wpt_custom_reset_link_change()
{
	return '<a class="reset_variations" href="#">Your Text</a>';
}

See full in Github Gist: See Code and full link of Gist: https://gist.github.com/codersaiful/cae91aa78d743a4dc23132dc6969ae43