If you are looking for game-related "Ice" menus, they typically refer to fan-made modifications for enhancing gameplay features. GTA V "Ice" Mod Menus
Once installed, a floating round button typically appears in the top-left corner to toggle the menu.
Most require Script Hook V to be installed in the GTA V main directory first. Activation: Standard keys are often F8 , F4 , or Page Down .
Ice is a free, open-source alternative to Bartender used for organizing and hiding menu bar icons on macOS.
Usually found on community sites like GTA5-Mods .