What to buy - and should I even use norton?

I bought a laptop 3 years ago and was sold a norton subscription in the store for about $170.  It appears that this has been automatically renewing each year without my knowledge. I just found out, because my credit card ran out.  I went to look at the website and it seems that I should only be paying about $40 (don't need storage, have only had it on one device).  I can't seem to get any support or advice from Norton. My questions are:

- do I need this? and if so should I use norton (from looking at this community feedback, customer service is very poor)?

- do I need to put it on all of the families iphones and ipads (buy multiple licenses?)

- when I had norton on my laptop, I had multiple problems getting my email from outlook (pretty much all I use the laptop for). Can this be solved?  

Thanks!