A verified account is often designated for leading figures, companies, or content producers. TikTok considers the blue checkmark so seriously since they feel this should be reserved for accounts at threat of being duplicated. TikTok has strict standards that must be followed to be verified.
There is no minimum number of followers required to be verified. Instead, your account will need more incredible metric growth and performance. What matters is daily TikTok follower increase or increased video viewing times.