Hello dfhjr,
You can use a piece of software called crystal disk to read the S.M.A.R.T data of your NVME SSD. You can click here to download the standard edition of crystal disk.
To test the read/write speed of the disk I recommend AJA System Test, which can be downloaded here.
To run a benchmark on said NVME, you can use the free trial of HD Tune Pro, which can be acquired here.
Happy testing, hope you find what you are looking for.