[Vuejs]-How can i set npm build option? I want to put my css and js file in static folder. (vue cli 3,npm, vuetify)

Take a look at Public Folder for Vue CLI 3. To quote the docs

Any static assets placed in the public folder will simply be copied and not go through webpack. You need to reference them using absolute paths.

All you would need to do is place your css, js, images in your public folder