@ Melo, tbh past 26 supply I don't know exact numbers. What I do really differs from match-up to match-up (I only know like one or two good builds per match-up and even then I don't KNOW the builds I just know what to get lol).
In general, for a 3-gate Robo build, what I usually do is around the build order you put. Depending on the map/match-up I may get my first Zealot before Cybernetics. I get to the point where I have 1 gate producing units and my Robo, and around the halfway point of warp gate researching I build 2 more gateways so the warp gate tech and gateways finish at the same time. Around the time my warp gates finish and I reinforce I push out. Usually I have 2 Immortals in the mix by the time I push out.
Things I like to do:
-Get some sort of map control before pushing out. Usually I get an Observer before Immortals unless I messed up somewhere and don't have the money/want to push earlier, so I know what they're doing. However I like putting a proxy pylon somewhere closer to them on large maps. On maps like Lost Temple I put a probe at the Xelnaga Tower and make him build a pylon, so I know if he's pushing out and there's shorter warp distance for quicker reinforcements.
-I think shortly after the time I push out I have enough for an expansion
-If I'm in the process of getting my expansion up but don't have it up, I try to just poke around with those units. Sometimes I just park them in the middle of the map somewhere.
After this against Terran, I usually try to tech up to HTs. Protoss I honestly have no clue (forge+more gateways maybe? lol), and Zerg I usually go Phoenixes and don't go robo anyway. I feel like the easiest tech switches out of that push are Collosi or HTs, or you could go for more gateway units + blink stalkers or chargelots. I usually add a forge when my second expansion's kinda saturated.
i hope that rambling kinda helped. I honestly haven't played enough games to tell to be honest though. Most of my games go into mid-game at the latest and that's all I've practiced really from YABOT.
edit: Melo, what's your friend info?