Epson M200 scanner not working on my iMac M1 running macOS Sequoia 15.5

Go to Applications and open Image Capture.

see > Scan images in Image Capture on Mac - Apple Support

According to Epson

The latest Epson Drives are only support up to macOS 14 Sonoma and Not macOS 15 Sequoia

Suggest trying a Third Party Software that may support this scanner

https://www.hamrick.com/vuescan/epson_m200.html

Scan images or documents using a scanner and your Mac

If you have a scanner or a printer with a scanner, you may not need any special software to scan an image.

Before you scan, you need to open your scanner. Then, follow the instructions for either a document-feeding scanner or a flatbed scanner.

Note: The following options might not be available for your scanner. If these instructions differ from what you see onscreen, refer to the documentation that came with the app you’re using.

Open your scanner

1. Connect your scanner to your Mac, plug it in, and turn it on.
2. Choose Apple menu  > System Settings, then click Printers & Scanners  in the sidebar. (You may have to scroll down.)
3. Click the printer or scanner in the Printers list on the right, then click Open Scanner.
4. If you don’t see an Open Scanner button, you may need to set up your scanner, or check the documentation that came with your scanner to see how to perform scans.