If you’ve flown it and it can be verified I can’t see an issue. The problem comes if it was a while ago and you cannot remember what you did or you are very rusty.
If it was PPL instruction and it was a while ago then I’d be inclined to start the course again, however the hours can still be counted.

If the flights you did were not with a qualified flight instructor then I am afraid you cannot count them, can you give a little more info please 🙂

Dean