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Treat the T5018 you received as record of at least some of the income that you will need to report in your tax return.
Box 22 of the T5018 shows the total amount of payments made by a contractor in their selected reporting period.
For unincorporated entities, the income should be reported on Form T2125, Statement of Business or Professional Activities, as revenue on line 4A. This amount is then reported on line 13499 on your Income Tax and Benefit Return. Since the contractor’s fiscal period may differ from the calendar year period which unincorporated entities must use, reconciliation may be required.