If I file my 2018 w2 this year can it be offset due to defaulted student loans due to the Corona Virus?

As of 3/13/2020 the U.S. Department of Education has suspended collection of student loan debt.  According to the U.S. Department of Education website at this link and pasted here:

Questions About Defaulted Loans

UPDATED: On March 25, 2020, ED announced that my federal tax refund would not be withheld to repay my defaulted federal student loan debt. My refund has already been taken. Will I get it back?

Yes, but only if your federal tax refund was in the process of being withheld—on or after March 13, 2020, and before Sept. 30, 2020—for the repayment of a defaulted federal student loan.

Your federal tax refund will not be returned to you if the process to withhold your refund was completed before March 13, 2020.