Hello,
We've only 53 reported sales in the .com extension containing the word "Partnership" from 2006-2022 with the highest price of 3,100$ for "PartnershipProgram. com" in 2015.
I think that this domain needs marketing for the right potential buyers. In my opinion, high 3 figure to low 4 figure is a fair price for this domain name considering the metrics mentioned above.
Negotiation skills will make all the difference when you market this domain.
Wish you all the best!