It looks like a either a plugin or your theme is causing a jQuery conflict with the WordPress Dashboard.
You can use “inspect element” in your browser, and then go to “console” to see if there are any errors or warnings. This should lead you to the broken plugin. If you need assistance, feel free to post your findings from console and I would be happy to take a look.
Alternatively, if this happened after installing a plugin or changing themes, deactivate the plugins or switch themes to target what exactly is causing the conflict.