Here are the steps to leave a review on Google My Business in as few steps as possible:

1. Search for the business you want to review on Google.
2. Scroll down to the “Reviews” section and click on “Write a review.”
3. If prompted, sign in to your Google account.
4. Choose a star rating and write your review in the box provided.
5. Add any photos or videos to your review, if desired.
6. Click “Post” to publish your review.

Note that some businesses may require you to be a verified customer or have made a transaction with them before you can leave a review. Additionally, Google’s review policies prohibit fake or biased reviews, so make sure your review is honest and reflects your genuine experience with the business.