HOW TO REPLACE THE SSD IN A MACBOOK PRO 2017 13–INCH?

Provided the MBP has no Touch Bar and only two Thunderbolt ports, its SSD isn’t soldered in. However, this is an expensive custom part. There are affordable third–party adaptors and substitutes available, but yours might also be eligible for a free replacement SSD from Apple. See bit.ly/ mac371mbpssdservice.