Note that there is nothing you can do now.
So firstly, I think it's worth saying that you are by far not alone in this. Performance reviews to many people can feel like a "make-or-break" situation, and can feel like a massive "unknown" that could either push your career forward or hold it back.
However, the reality is that your performance review is simply a meeting to reflect on the work that has already been done. That means whatever you achieved, or failed to achieve, has already been set in stone across the previous period of work - the review is now relatively out of your hands.
That can sound scary, but it's also the reason not to be scared. There is very little you can do to change the outcome at this point - so there is also nothing (rational) to get anxious about (see note). It's no different than burning dinner; once you've done it, you can relax and move on - the action is already done and overthinking it won't find you any solutions; so you just go and find something else to eat.
Ask for more regular feedback
On the note of performance reviews feeling like a massive unknown "make-or-break" scenario. You can't solve it for this review, but for future you can take steps to avoid being in the same situation again.
Rather than waiting for the end of year to have the review with your manager - schedule regular feedback sessions where you can ask them how you are getting along. You should focus on objective feedback; are you working on the right thing, are the stakeholders happy with your output, is there anything more your manager feels you should be doing?
By asking regularly, you will know the outcome of any performance review well in advance of it happening. Importantly, it will also give you the time to rectify anything that needs improved before it gets finalized into a review.
Once you kill that "unknown" factor, there is a lot less to stress about - and it becomes clear that the review itself is simply an exercise in writing paperwork.
Remind yourself that your value is not your job, you get paid for working - that's as far as that relationship goes
Finally, I would remind you that your job is not your value as a human.
It can be easy to get into a trap of associating all "good things" as being reliant on keeping your job. Yes you have bills, yes you need food, but no, this employer is not the only place that values your skills.
The relationship between you and the employer is a simple "money for business value" equation. If you are not providing the value that business needs, and it gets rid of you, that does not mean you have failed or will fail to find another job. You have skills, worth money, and if they happen not to fit into this business' expectations - you are free to find a place where they are a better fit (and you will manage to do this).
Similarly, you are free to leave at any time. Do not tie your identity or feeling of "purpose" to keeping this particular job. There are plenty of people who will pay for your skills; feel confident that you can move at any time you please - and you are not nearly as dependent on "doing well" at this job as you think you are.
(note:) I do sincerely appreciate that anxiety does not work in a rational way. For those of us that suffer from such feelings - the best you can often hope for is to feel less anxious, it is perfectly normal that the feeling will not magically disappear, no matter the facts you know.