Yes, you will file that income assuming you have other income that together totals more than the gross income threshold for your filing status. See below for an extract from Publication 501, Table 1. That income would be cash income for your self-employment business.
In the "Self-employment" topic after entering your business identifying information, you will have the opportunity to enter income and then expenses that may offset all of that business income.
Here are gross income thresholds for filing a federal tax return:
single
under 65 $13,850
65 or older $15,700
head of household
under 65 $20,800
65 or older $22,650
married filing jointly***
under 65 (both spouses) $27,700
65 or older (one spouse) $29,200
65 or older (both spouses) $30,700
married filing separately
any age $5
qualifying surviving spouse
under 65 $27,700
65 or older $29,200