You are informing someone that you are at a particular place to accomplish something.
Here are some examples:
“I’m here to apply for the job.”
“I’m here to take a test.”
“I’m here to receive my gift.”
“I’m here to support all your decisions.”
“I’m here to watch a movie.”
“I’m here to work on your computer.”
“I’m here to welcome you to the neighborhood.”
“I’m here to raise awareness for cancer.”
“I’m here to start the job.”
“I’m here to receive the award.“