score:1
A cancelled application is not the same as a refusal. It will however still be in UKVI’s records, although IIRC the application does not ask about previously cancelled applications.
You can submit a new application any time after cancelling an earlier one; all information you submit should of course demonstrate your current circumstances and be consistent, where relevant, with any previous applications. This guide https://www.gov.uk/government/publications/visitor-visa-guide-to-supporting-documents/guide-to-supporting-documents-visiting-the-uk explains what kind of documentation you should submit, and what not to submit.