Since this is an older version, you won't find it on the Google Play Store. You will need to sideload it using an APK file. Here is how to do it safely:
If you want a fast, lightweight, modern browser that respects your privacy and security, consider these instead of an old UC Browser APK: uc browser 601 apk
With a UC account, you can sync bookmarks, history, and settings across multiple devices. UC Drive provides up to 20 GB of free cloud storage for your downloads and files, accessible from any device. Since this is an older version, you won't