It should ideally take from a few seconds to a few minutes. That's not extremely excellent, it's just good practice.
More than that and it hints towards heavy reliance on manual testing, and that's something I'd be worried about.
EDIT: Despite the parent comment's misguided logic, it seems his/her fears are actually in the right place.
An issue was opened about 6 weeks ago asking where the tests are and it received zero responses from the maintainers: https://github.com/bitwarden/core/issues/399