It sounds like you're asking how to phrase or respond to the question "How long have you been living there?" This question is typically used to ask someone about the length of time they have been living in a particular place. If you want to respond, you can say:
-
"I have been living here for [duration]."
Example: "I have been living here for three years." -
Or simply:
"I've lived here since [starting time]."
Example: "I've lived here since 2018."
If you need help using the question in a sentence or want a more detailed explanation, just let me know!