Hi,
Since your cursor moves but won’t click, it’s often a settings or driver issue. First, open Settings > Bluetooth & devices > Touchpad and make sure "Tap to click" and the physical button options are enabled. If that looks fine, go into Device Manager, uninstall the touchpad driver, then restart your laptop Windows will reinstall it automatically, or you can grab the latest version from ASUS’ support page.
Kind regards,