Magento 2 Hide Product Price Extension
https://www.cynoinfotech.com/product/hide-price-magento-2-extension/
Hide Price for Magento 2 helps to hide the price and add to cart button for non-registered customer groups or guest customers. Hide Price for Magento 2 is all you need to keep an eye on the display of price details and the Add to Cart button. If a non-registered customer clicks the Add to Cart button or navigates to the product page. Product price, admin can redirect them to login page. After logging in, customers will see the price of the product and then add it to the cart.