Their all the methods to earn money with TikTok:
Influencer marketing: Influencer marketing is one of the most popular ways to earn money on TikTok. Brands pay influencers to create sponsored content on their accounts. To become an influencer on TikTok, you need to have a large following, engage with your audience, and create content that resonates with your niche.
Live streaming: TikTok allows users to live stream, and you can earn money through virtual gifts that your followers can send you during your live stream. TikTok takes a cut of the virtual gifts, and you get the remaining amount.
Creator Fund: The TikTok Creator Fund is a program that pays eligible creators for their content. To be eligible, you need to have at least 100,000 followers, have posted at least 100 videos, and have at least 100,000 video views in the last 30 days. The amount you earn from the Creator Fund depends on your engagement rate and the number of views your videos receive.
Selling merchandise: If you have a loyal following, you can sell merchandise like t-shirts, hoodies, or phone cases with your logo or catchphrase. You can use a print-on-demand service like Teespring to create and sell merchandise without the need for inventory.
Affiliate marketing: You can promote products or services on your TikTok account and earn a commission for each sale made through your unique affiliate link. You can sign up for affiliate programs of companies in your niche and promote their products through videos. When a user clicks on your affiliate link and makes a purchase, you earn a commission.
Brand partnerships: In addition to influencer marketing, you can also work with brands on a long-term basis as a brand ambassador. As a brand ambassador, you promote a brand's products or services over a longer period of time.
Cross-promotion: If you have a following on other social media platforms, you can cross-promote your TikTok account to attract more followers. For example, you can post a link to your TikTok account on your Instagram or Twitter profile.
Crowdfunding: You can use crowdfunding platforms like Patreon to ask your followers to support your work. Patreon allows you to offer exclusive content or perks to your supporters in exchange for a monthly subscription fee.
It's important to note that building a following on TikTok takes time and effort. You need to create quality content, engage with your audience, and use hashtags and trends to increase your reach. Once you have a loyal following, you can start monetizing your account using the above methods.

