Ichigo and Ulquiorra fight in quite a few episodes, but most of them are just minor fights. The real battle between them comes in episodes 270 and 271.
Ichigo fights White Ichigo in Episode 270 of the Bleach anime titled "Beginning of Despair... Ichigo, the Unreachable Blade." This fight between Ichigo and his inner Hollow serves as a pivotal moment in the series, revealing deeper layers of Ichigo's strength and inner struggles.
269 ichigo and ulquiorra release there swords
episode 167
235 I believe
In episode 267,268,269,270,271. btw its ulquiorra
Episode 111: Shock! The Father's True Identity
well i wouldn't call this a fight but in episode 61 ichigo and renji confront aizen because hes attempting to take the hogyoku out of rukia he doesnt really fight aizen till the final battle in episodes 308-309
Episode 267
Hollow Ichigo fights during the battle against Uryu Ishida in Episode 118 of "Bleach." This is part of the "Soul Society" arc, where Ichigo's inner Hollow emerges to take control during a critical moment in the fight. The confrontation showcases the struggle between Ichigo and his inner Hollow, highlighting the duality of his character.
A quick little spat in episode 41, but the full fight is in episode 54 (but that's just the start) the full fight is in episode 55 through 59, its a long one but there are alot of other thing in between
episode 5 season 5
Ichigo Kurosaki's battle against Grimmjow Jaegerjaquez takes place in Episode 125 of the anime "Bleach." This intense fight is part of the "Arrancar" arc, where Ichigo faces off against the powerful Espada. The episode showcases their fierce combat and highlights Ichigo's determination and growth as a Soul Reaper.