@shahinea 

"what is the maximum I can deduct for sep ira"

Did you use your public resources? I googled:

max sep ira 2022

and found:

https://www.irs.gov/retirement-plans/plan-participant-employee/sep-contribution-limits-including-gra...

And since the amount can change every year, you need to use the IRS reference materials yourself directly, and specific to each tax year. Do not rely on 15 month old topics on the internet that refer to prior tax years.