Does the MBP turn on/power on? If so then you may be able to use Target Disk Mode to access the Drive on the MBP from a different Mac using a Thunderbolt cable. Use a Thunderbolt 2 cable to connect your 2015 MBP to a Thunderbolt 1/2 compatible Mac and hold the "T" key during startup.
If you are connecting to a newer Mac that only has Thunderbolt 3, then you can use Apple's Thunderbolt 2 to TB3 adapter along with a Thunderbolt 2 cable to connect the 2015 MBP to a TB3 only Mac.
If your MBP doesn't turn on/power on and you can't boot into Target Disk Mode, then your only options are using the OWC Envoy Pro disk enclosure and putting the ssd blade inside of it or putting the blade into another Mac that can use them.
I've used Target Disk Mode just fine on several Macs and I've also used the OWC Envoy Pro enclosure without any problems. The TB2 cable and/or the TB2-TB3 adapter can add up in cost if you don't have them already or don't need them for any other usage.