I am currently on Summer break from Uni and I was thinking of getting a Summer job. I know that after I will graduate and I will start applying for jobs, the first thing I will get asked is “what is your experience?”. It is difficult to build up your experience when you have none. For this reason, I was considering getting a very simple job that does not require much experience, like Runner. However, the problem is that Uni starts again in the autumn so I cannot hold to this job for longer than a couple of months. Would this short job count as work experience in my Resume?

This sounds like a great idea! I encourage you to go for it! You might learn new things from seeing how things are done on set even if it is just for a short amoung of time. 

There is no better way to learn than by going there and see how it's done! Even if you have a small job, all you need to do is to find your small door to enter this industry!

Everything matters. Everything counts. How else can you learn? Go for it!

Thank you everyone for your answers! I couldn't find a summer job, however, I managed to do some volunteering and it was a great experience! Hopefully, I will have a summer job this year.