Are you using the Online Premier version OR the Desktop installed Premier program? Income is under Federal on left or at the top.
In you are in the Online version and asking about self employment business, You can enter 1099NEC or cash Self Employment Income into Online Deluxe or Premier but if you have any expenses you will have to upgrade to the Self Employed version.
Where to enter expenses in the Online Self Employed version
https://ttlc.intuit.com/questions/3636848-where-do-i-enter-my-self-employment-business-expenses-like...
