Im tired right now, so forgive me if I miss understood what you asked. If you want to match the csgo hipfire, to you apex legends ads and hipfire, you need to use 1:1 settings.
Changing Cl_settingclfov in the settings.ini folder to the csgo fov. They may have changed the name or removed it, not sure. Once you converted, csgo hipfire, to your apex hipfire, you need a 1.3 ads multiplier. Its the closes you can get to 1:1 and it is pretty close. There is something else you can do in your settings folder located in your document - under your player profile, but its risk to tamper with stuff in there because of the games anti-cheat.