How do you get idolized by the brotherhood of steel in fallout new Vegas I did all the quests for them but I only got Liked including impeaching Mcmara

Usually the quests alone does the job unless you have negative rep beforehand. If you have convinced Mc namera to lift the lockdown then by then you should have idolized. Additional things you can do to better you standing is talk with veronica at the 188 trading post by boulder city. Do her companion quest and this should net you some brotherhood fame depending on how it goes. Also give her some fancy attire, she will teach you a special unarmed move.

You can't become idolized by the Brotherhood unless you have the Lonesome Road DLC add on. Its just one of those things.