You won’t find it even with default WC theme – Storefront, because it relates to an addition paid extension http://prntscr.com/mml7tf
Please try to use one of available widgets or find a plugin with the desired functionality. Note that we don’t give guarantee for full theme compatibility with all 3-rd party plugins.
Theme Options > Shop > Shop page Layout > Open filter by default > On.
Add this code in Theme Options > Custom css > Global custom css to hide the “Filters” button:
