You should be OK to apply to a number of unis to study chemistry. Lincoln university (which, by all accounts seems to be a good option for chemistry) doesn’t require A level maths to get into, for example.
A lot of the A level maths content isn’t really all that useful to chemistry, so you’ll definitely be taught all the relevant mathematics you haven’t done at GCSE whilst at uni.
As for careers after a chemistry degree, there are a heck of a lot of options available. Because of how many transferrable skills you pick up, you could get pretty much anywhere. The finance sector and research are especially common destinations for chemistry graduates.