The platform offers free and 3 paid subscriptions. You can find out more on the official TradingView website. It is worth saying that you will need a subscription in any case. Without it, you will not be able to stay on the same page for a long time and save graphs with your notes.
The type of tariff depends on your goals. A free subscription is enough for an unsophisticated trader, because most of the tools will be available to him. But if you are a professional, you work on many markets in parallel and value every second, then you can't do without a paid subscription. Depending on its type, you will be provided with simultaneous use of different number of indicators and charts, different number of alerts, as well as additional tools.