For sure! You can purchase the unlocked version directly from Samsung, and activate it with Boost Mobile.
You will need a different SIM card. We recommend using the compatibility checker here at https://activate.boostmobile.com/bring-your-phone to get the compatible SIM card.
For sure, @xlevix10! Customers can purchase the Galaxy S10e, Galaxy S10 and Galaxy S10+ directly from Samsung and activate with Boost Mobile.
You can also get the SIM kit here at https://activate.boostmobile.com/bring-your-phone, or visiting your nearest Boost Mobile store.