for the context, i want to hide prices when users search on my website. below is the reference. my website is unitetris.com. thank you
Hi @UC2k24 
in a custom-css setting for the theme ,try the following CSS
https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/add-css
#predictive-search-results .results__group-2 .grid-product__price {
display: none !important;
}
Be aware this is only visually hiding the element, which is not the same as trying to prevent it from rendering/existing in the first place. Preventing rendering is an advanced theme customization.
If you need further customizations you can contact me.
Contact info in forum signature.
ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail in ALL correspondence.
Goodluck.