How to log into my iMac (2017 model) with my acct. password and without a mouse, keyboard, or trackpad?

Not possible.

Most any USB Keyboard and mouse will work with your 2017 iMac.

Dig out, barrow or buy an inexpensive keyboard and mouse to log-in and use the iMac.

Hmmm. You did say with no mouse, keyboard, or trackpad. 😎

Using a cheap keyboard and/or mouse isn't none.

FGM801 wrote:

Thanks den-thed, most helpful and very much appreciated.

You're welcome.