Can I upgrade Ram on a 16" Mac Book Pro 2020 from 16GB to 64GB ?

Hi,

As far as I know, RAMs are soldered on logic board, so you can't upgrade RAM on your 16" MacBook Pro.

hogleone wrote:

Can I upgrade Ram on a 16" Mac Book Pro 2020 from 16GB to 64GB ?

Not after the purchase.

RAM/SSD all soldered to the board at manufacture:

What is a MacBook Pro 2020?

Identify your MacBook Pro model - Apple Support