Intern with no work..how do I use this time productively instead of wasting it?

I’m currently interning at a company where my working hours are 10:00 AM to 6:30 PM, but I’m hardly given any work. Even when I ask for tasks, I’m usually told to wait and it seems like this is how it’s going to be throughout the internship. I don’t want to just sit idle and waste this time. I’d really like to use these hours to upskill myself and build something meaningful that I can add to my resume. I am a 1st year Mba student. My ug is bsc chemistry.

Any suggestions on what I can learn, build, or focus on during this time? Would love to hear what others have done in similar situations.