OK, thank you. You potentially have more than one offset, the WEP and the Workers Compensation offset.
For WEP, because your estimated SS benefit is not based on accurate data - the SSA was not advised of your state work, because you didn't pay SS taxes on that income. Once you apply for retirement, the SSA will learn of your state work and the income you derived from that,that lead to another government pension besides the SS benefit. It will apply the WEP to correct your incorrect SS estimate. Without all income and pension information, you can't determine what that will be. However, I will send you the link for the WEP calculator.
Your OWN SS benefit it limited by the WEP (Windfall Elimination Provision). That provision ensures that your SS % rate is the same that is used for people who earned the same amount as you over their lifetime - previously, your reported lifetime earnings that the SSA was aware of failed to include all of your income (namely,that part you earned and didn't pay SS taxes on). The total amount is important because that amount determines if you were a poor lifetime earning (who should get a 'welfare' % rate applied to average lifetime monthly earnings, to get your end SS benefit amount) or a normal earner. Poor earners may get as high as a 55% figure applied to get them their benefits (so it won't be too low) while normal/high earners will get far less, as low as 25%). Because you were not a poor earner over your life after all, your estimate was based on wrong %, it gave you the welfare bonus, and so WEP will be applied to recalculate it to reflect your true earnings and appropriate earned (not welfare) rate.
WEP Calculator can be found here: https://www.ssa.gov/planners/retire/anyPiaWepjs04.html
The other offset that may or may not apply is the WC offset. There is a rule that for any given month where you get SS benefits and WC benefits, there is an offset or reduction in one of them to ensure you do not collect more than 80% of your average earnings. The SSA would have (or will have) a determination of what your average earnings was for WC offset purposes. Once it knows what your average is, you will have a cap on benefits (combined) of 80% of that average income amount (monthly amount).
On a positive note: If your SS benefit is reduced by the WEP, that may actually reduce or eliminate any further reduction due to 80% rule, since you will be less likely to be getting close to that 80%.