It depends if he gives you a W2 or 1099NEC or no form for it. If you get a W2 you only have to file to get back any withholding taken out in box 2. But I have a feeling he didn't take taxes out of your pay and paid you as an independent contractor and it is self employment income.
If you get a 1099NEC or no form at all then it is self employment income and you have to file it and pay self employment tax on it. To report your self employment income you will fill out schedule C in your personal 1040 tax return and pay SE self employment Tax. You can enter Self Employment Income into Online Deluxe or Premier but if you have any expenses you will have to upgrade to the Self Employed version. Or any of the Desktop programs.
How to enter income from Self Employment
https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/...
He can still claim you as a dependent and on your return you will have to check the box that you can be claimed as a dependent. Do not miss that!
