1. If you are dual status alien (which you are for 2024) you are taxed on all of your income worldwide for the period that you are a resident and only income from US sources while you are a non-resident. Sounds like this 1099 may be from a US source in which case it will all be taxable.
2. You can file as a resident in the year that you become one if you pass the substantial presence test or the green card test. You probably weren't here for 183 days last year but you did get the green card so you have the option to file as a resident for the year.
@Sleverette99
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