Don't. Pass the text to Form2 - via a method or a property - and have it draw the text.
That way, Form2 doesn't need to know Form1 exists, it just gets on with the job. So if you need to make changes to Form2 later, you don't have to consider the effects on other forms.
Exactly how you do it depends on the "relationship" between the forms. In essence if FormX creates an instance of FormY, then FormX is the "Parent" and FormY is the "Child", and exactly how to handle the communications differs according to that, as a "Parent" needs to know about "Children", but "Children" don;t need to know about it's "Parent" or other "Children".
Have a look at these:
Transferring information between two forms, Part 1: Parent to Child[
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Transferring information between two forms, Part 2: Child to Parent[
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Transferring information between two forms, Part 3: Child to Child[
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