Disable a folder page but still be visiable on header nav

Site URL: https://www.imexgolvprodukter.squarespace.com

Hello,

Would like to disable a folder page but still have it visiable on the header nav.

Password to page: 3302

You mean disable click? If yes, add this code to Design > Custom CSS

.Header-nav-folder-title {
    pointer-events: none !important;
}