[Help] ifrot Installation Problems

[Help] how to install ifrot-Linux general technology-Linux programming and kernel information. For details, refer to the following section. I downloaded the latest non-commercial version of ifort from the intel website and received the licence and serial number in the email, but I used the serial number NC5M-Z436TCF5 he gave to indicate that the serial number was incorrect, the licence method provided in this forum cannot be installed. If you do not set the path, skip this step when installing it, as shown below:

Step no: 1 of 7 | Welcome
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Welcome to the Intel (R) Fortran Compiler Professional Edition for Linux * version
11.0.

Intel (R) Fortran Compiler Professional Editions include not only
High-performance Intel (R) Fortran Compiler Professional, but also Intel (R)
Debugger and Intel (R) Math Kernel Library (Intel (R) MKL) to create a strong
Foundation for building robust, high performance parallel code at significant
Price savings.
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You will complete the steps below during this installation:
Step 1: Welcome
Step 2: License agreement
Step 3: Activation option
Step 4: Installation configuration
Step 5: Configuration summary
Step 6: Installation
Step 7: Installation complete
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Press "Enter" key to continue or "q" to quit: NC5M-Z436TCF5
Incorrect input, please try again
Press "Enter" key to continue or "q" to quit:
Excuse me, what's the problem? How to set the path? The younger brother looked at the methods of the two eldest brother and felt that my situation was not the same. Please help me. Thank you.