depends on the price you placed the order at.
for instance if you put the price at $12k each. you will have to wait for the markets to even get to $12k to even get to your order.
th top price was about $9027 so if you put your order to sell at anything higher. you have to wait for th market to get to your price

if you put an order BELOW the current market rate then it should have sold instantly

its not an auction house where the highest bidder wins or they match speculators at different prices. its market rate of live trades based on the market price.