64 bit has been the default recommendation from Microsoft for M365 apps for quite some time now. However, if you have a specific reason or requirement to continue using a 32 bit version, then there is no issue with this at the moment.
To find the version of Teams you are running on your computer, click on your profile image at the top right of the Teams window, then select About > Version and the version will show at the top of the screen. If you are running 64 bit, it will show after the version number.
In my case for example, I am currently running Version 1.3.00.19173 (64 bit).