Q: Can u help determine the year this book was published and if so if it’s valuable
The Lady of the Lake by Sir Walter scott.

A: In 1903 the Vademecum Series was published with the basic cover that your book has with one of more than 40 European paintings within the cover template.

Because of the width of the original paintings, two books may have parts of the same painting but may look totally different because they have different sections of the painting on their covers.

Since all of the titles in the Vademecum Series are reprints, only very collectible ones have any value. Unfortunately your book is not in that group.
It will be a hard sell at any price.