how to conjugate he estado?
How to conjugate he estado?
I do not understand your question.
"He estado" is already conjugated, using the "yo" form of the present indicative of the verb "haber", and then the past participle of the verb "estar."
You are using the present perfect indicative. Maybe this link will help you:
Next time, please try to provide more details and clarification about what you are trying to ask.