How do i get my Python .env credentials file into Ubuntu EC2?

I have a .env file which my app.py file references, containing my AWS credentials. How do i get this into my AWS Ubuntu EC2 machine?

I can't even upload it to GitHub.

If there's any security issues with this, whats the simplest workaround strategy you use? Worst case i could hardcode it, but i don't think that's ideal.