The tags appended to your post suggest that you have a fifth generation iPad Pro.
This iPad will have been supplied with a 1m USB-C to USB-C charging/data cable - and a 20W USB-C Power Adapter.
If you require an identical replacement charging/data cable, this can be obtained directly from Apple or an Apple Authorised Retailer:
- 60W USB-C Charge Cable (1m)
https://store.apple.com/xc/product/MQKJ3ZM/A
Should you require a longer cable, Apple also offer a 2m cable:
- 240W USB-C Charge Cable (2m)
https://store.apple.com/uk/xc/product/MU2G3ZM/A
There are also third-party alternatives available from other sources. If using a third-party USB-C cable, choose a good quality branded cable from a well known manufacturer. USB-C cables are not universal - and greatly vary in both quality and capability.