If your Apple Watch is dead can you still track your Apple Watch

No, but you should put it in Lost Mode in case someone finds it and charges it. See the 'Put your Apple Watch in Lost Mode' section in:

If your Apple Watch is lost or stolen - Apple Support

nae35 wrote:

If your Apple Watch is dead can you still track your Apple Watch

No.

javaliga wrote:

No, but you should put it in Lost Mode in case someone finds it and charges it.

Better answer than just saying “No.”