As above, what you have told us is insufficient to give proper advice. So I'll take a few guesses.
First of all it is my guess that the notice you received in June 2024 “…informing me I was going to receive 6 points (speeding)” was nothing of the sort. It is my guess that it was a “Notice of Intended Prosecution” together with a “request for driver’s details”. I’ll then guess that you failed to respond to that request and it is that failure, rather than speeding (whether one or two offences) which saw the six points imposed on your record and which led to your licence revocation.
You can easily check this by looking at your driving record online to see what offence(s) you have been convicted of. If I m correct you will see an endorsement code of MS90.
Since points can only be imposed by court (unless you agree to the police doing so, which you obviously didn’t) the matter must have been heard in court and you would have been sent papers informing you of that, and of the outcome.
As you were unaware of those proceedings you can perform a “Statutory Declaration” to have the conviction nullified and the points removed from your record. Whether it would be worth your while doing so is arguable. If you do that the charge will be raised again and I believe, from your very brief description coupled with my guesses, that you have no realistic chance of successfully defending that charge. In that case your time and money would be better spent making arrangements to take your test again.
Of course if I am wrong, please tell us what actually happened and we can go from there.