You can easily upgrade Windows 10 32 bit to 64 bit as long as your computer meets the upgrade requirements and you have a copy of your important data.
How to upgrade from 32-bit to 64-bit version of Windows 10
Microsoft Windows 10 Pro 32-bit/64-bit 1 License for Windows (HAV00059) for sale online
Upgrade Windows 10 32 Bit to 64 Bit without Losing Data
Upgrade Windows 10 from 32-Bit to 64-Bit without Data Loss
Download RSAT for Windows 10 from Official Microsoft Download Center
Upgrade Windows 10 32-bit to 64-bit without losing data and files in 2021
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Upgrade Windows 10 32 Bit to 64 Bit without Losing Data