Yes, you can definitely copy and paste Lightroom edits! Here's how:
First, make sure you're in the Develop Module. Then, select the photo you want to copy the edits from. Next, click on the "Previous" button in the bottom left hand corner. This will bring up a list of all the photos you've edited in that session. Select the photo you want to copy the edits from and click "Copy Settings."
Now, go to the photo you want to paste the edits to and click the "Paste Settings" button. This will bring up a list of all the settings that will be applied to the photo. Check the boxes next to the settings you want to paste and click "Paste."
And that's it! You've now copied and pasted Lightroom edits.