Because you are trying to use Posts grid for woocommerce. You need to use Woocommerce grid and select Compact style in design options

I tried to create a page where I tried using the "Deal/Coupon grid" block to display products. The products are displayed, but the price is still not displayed.

https://v2.magentka.cz/test-wc-show-product-on-block-deals/

Screenshot

It would probably need some CSS like before https://sizamtheme.support-hub.io/tickets/36612

e.g. 

.woocommerce .products .product.woo_compact_grid .price del{display:block !important}

To display the search results, I created a page using Elementor where I put a "Deal/Coupon grid" block to display the search results.

Screeshot

It shows in deal grid layout. Currently it’s not clear which layout you use on shop, it looks like you use customized design and layout 

you can select layout in theme options-shop settings-design for archives

i have set but search not show price and brand, logo in block Deals, WC products

screenshot

Hello,

what should I add to css to display prices and logos from Woocommerce in "Deal/Coupon grid" block?

Just like we did before here https://sizamtheme.support-hub.io/tickets/36612 using CSS.

.woocommerce .products .product.woo_compact_grid .price del{display:block !important}

Thank you

Regards