Got a Power BI internship as a CS student

Hi, basically Got a power BI internship as a computer science student who is about to finish his 2nd year in university.

My end goal is trying to maybe become a Data engineer or SWE, however I don’t really know what I exactly want to do yet. I know nothing about power BI besides what I learned a hour before the interview but they gave me this internship I’m not sure if I should do it this summer, I do have a unpaid developer internship lined up however that is with a startup and I’ll mostly be working alone for that.

With the power BI internship I get a big pharma company on my resume however again I’m not sure if power BI is relevant to computer science and if I should do it as a CS major, I’m not sure if it will look weird if I chose this internship as a CS student.

Overall looking for advice I’m grateful for the opportunity but never imagined doing power BI and not sure if it’s good to do it for 4 months or I’m better off just doing a unpaid developer internship at a small startup which technically could lead to paid opportunities because I get exposure to a lot of connections in the tech industry through that startup. Like the CEO of the unpaid internship startup knows CEO’s of bigger startups that are hiring for actual paid positions in tech and he said if I do well in the unpaid internship he can refer me directly to the CEO’s.