Adding the Static Block to one classification Page in Magento 2
In default Magento 2, categories don’t contain numerous additional elements. You may change the way your category page looks using static blocks, and it’s not At the time difficult As it can seem at one beginning. In this article I’ll explain you how you can enlarge CMS Static Blocks to division pages.
if by default, Magento 2 doesn’t Having the blocks you need, you may check this article to figure out how to create CMS Static Blocks.
so afterward of all, you need to decide to which category you would similarly to add an static block.