Where did you buy it? For example, if you buy a fund through online banking, you can find an online fund or a fund supermarket. There are transaction inquiries, or historical transaction inquiries, transaction confirmation inquiries, etc. Then choose the approximate date, and you can see the transaction record.
Or you can directly find official website, the fund company of the fund you bought, register and log in for transaction inquiry, or you can find the inquiry system, which is also selected according to the time period, and then see the transaction records and confirmation messages.
Or directly call the fund company or the agency channel, and the customer service staff will help you check after verifying your identity.