If someone says, "I appreciate you," you can respond in a few different ways depending on your level of comfort and the context of the situation. Here are some possible responses:
"Thank you." This is a simple and polite response that acknowledges their appreciation.
"I appreciate you too." This reciprocates their sentiment and shows that you also value their presence or actions.
"I'm glad to hear that." This response acknowledges their appreciation without necessarily reciprocating it explicitly.
"It means a lot to me that you appreciate me." This response expresses gratitude and shows that their words have had a positive impact on you.
"I'm happy to help/support/be there for you." If the appreciation is related to something you did for them, you can respond by acknowledging your willingness to assist or support them.
"You're welcome." If their appreciation is for something you did, this is an appropriate response.
Choose the response that feels most natural to you and fits the situation best. Being gracious and appreciative of their kind words is always a good approach.