The second one is incorrect, I think you meant “I look forward to meeting you?”
I’m looking forward to - is in the present continuous (implying it is in progress at the moment)
I look forward to- is in the present simple (implying it is more of a general action or repeated action)
I would use: I’m looking forward to meeting
And I would use, the present simple in a more general sense. I look forward to my yoga class every morning.