US 5G is really 4G plus a little. It's as much 5G as a Chevy is a Sherman tank. If you're in Saudi Arabia (the fastest at this time), you'll get consistent speeds over 400mbps. but in the US, in most locations, even Verizon won't go over 50mbps (if you're lucky). Then again, the internet is running about 6mbps for non-local connections, so even if you had a 400mbps connection to the tower, the tower isn't getting the data from the server faster than 6mbps - so you won't get it any faster. (And even 3G can go that fast.) About the only thing 5G buys you today is tethering 5 computers to your phone and each one of them doing a large, high speed download. Each one will be downloading at 6mbps at the same time. (That costs 30mbps from the tower, which 5G can handle, but 4G probably can't [although the 4G spec calls for up to 50mbps - but you'll rarely - if ever - see that.)
Mainly, in late 2020, all 5G gives anyone is ... the carriers can cram more users on the same tower with no degradation of speed. But each user isn't going to notice much. (Speed tests are done to local servers, so you can actually see 500mbps speed, and it's legitimate. But when you're downloading from Play, or from GitHub, you're usually back to 6mbps maximum.)