You will only receive a 1099-K if you had more than $20,000 in gross sales for this year. If you didn't cross this sales threshold, you won't receive a 1099-K this year even if you filled out a W-9 for us.
Regardless of whether you make $20,000 on TpT and receive a 1099-K, you should consult your tax advisor on how to report your TpT sales.