Hello,
Sorry to say but your concern is not clear enough.
Right now, the Category page link that you have shared is showing all the Variable Products with a Price Range which is correct. This is how by default Variable Products are shown at WooCommerce level.
If we understand your concern correctly, you want to show Sale Price for the Variable Products on the Archive pages, sorry to say but by default for the Variable Products at WooCommerce level, it shows the Price Range and shows the Discount Label above it. The Discount label shows the percentage of maximum one offered on the variants. This is how it works at WooCommerce end.
Further, at the Theme level there is an option which hides a higher price for variable products and leaves only a small one. So, if you want to enable it then you can go to Dashboard > Theme Settings > Shop > Variable Products > Price > there you can find the Hide “to” price toggle option > you can enable it: https://snipboard.io/GCq9M5.jpg
Best Regards