hello ! i apologize if i posted in the wrong forum, but i want to ask for how long a gelding will be able to stay green and earn money ? i can't understand the bars thing.

for example, i know that an E would need at least 4 training sessions, but how long can i keep showing him until he levels up?

that depends. Some horses level faster than others. Then horses trained in all disciplines takes a little longer to level up than a horse trained in one discipline alone. Roughly I'd say E rated horses stay in the money for 3-4 weeks maybe only 2 maybe 5 if you're lucky.