Question

i am waiting for two hours correct sentence​

Answer 1

Answer:

I will wait for two hours

Answer 2

Answer:

...«❤ANSWER ❤»...

If the waiting period hasn't started yet you would say "I will wait for two hours". In order to use your second sentence you could conceivably say something like: "Tell him I'm waiting for two hours [starting now], maximum, and then I shall go home.