This is not a tuition site and your question is too expansive for a Quick Answers forum. I suggest you continue your research into how to use RDLC - there is a little bit more to it than the code you have shared.
You could start here (not an endorsement)
RDLC reports in Visual Studio 2019 (C# Code) - YouTube[
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If you get stuck with a specific problem then by all means come back with a question