Hello, Naborhi,
If you mean to leave only “On sale” item in Product status filter -> https://prnt.sc/anlTE-1mZWKo
then you may simply hide other items with the next custom CSS
.etheme_product_status_filter .etheme-ajax-filter:not(.etheme-sale-filter) {
display: none;
}
Frontend result: https://prnt.sc/L4Gfa7NW1OIi
Kind Regards,
8theme team